./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro --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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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-8393723 [2022-11-18 20:47:54,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:47:54,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:47:54,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:47:54,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:47:54,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:47:54,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:47:54,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:47:54,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:47:54,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:47:54,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:47:54,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:47:54,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:47:55,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:47:55,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:47:55,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:47:55,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:47:55,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:47:55,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:47:55,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:47:55,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:47:55,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:47:55,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:47:55,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:47:55,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:47:55,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:47:55,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:47:55,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:47:55,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:47:55,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:47:55,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:47:55,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:47:55,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:47:55,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:47:55,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:47:55,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:47:55,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:47:55,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:47:55,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:47:55,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:47:55,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:47:55,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:47:55,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:47:55,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:47:55,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:47:55,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:47:55,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:47:55,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:47:55,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:47:55,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:47:55,085 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:47:55,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:47:55,086 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:47:55,086 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:47:55,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:47:55,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:47:55,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:47:55,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:47:55,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:47:55,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:47:55,088 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:47:55,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:47:55,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:47:55,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:47:55,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:47:55,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:47:55,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:47:55,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:47:55,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:55,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:47:55,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:47:55,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:47:55,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:47:55,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:47:55,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:47:55,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:47:55,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:47:55,094 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_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-18 20:47:55,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:47:55,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:47:55,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:47:55,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:47:55,461 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:47:55,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-18 20:47:55,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/data/76119d52e/6937b9c78bb346ed9a92624e0f4921db/FLAG8ecb08af1 [2022-11-18 20:47:56,277 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:47:56,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-18 20:47:56,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/data/76119d52e/6937b9c78bb346ed9a92624e0f4921db/FLAG8ecb08af1 [2022-11-18 20:47:56,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/data/76119d52e/6937b9c78bb346ed9a92624e0f4921db [2022-11-18 20:47:56,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:47:56,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:47:56,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:56,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:47:56,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:47:56,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:56" (1/1) ... [2022-11-18 20:47:56,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2911c7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:56, skipping insertion in model container [2022-11-18 20:47:56,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:47:56" (1/1) ... [2022-11-18 20:47:56,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:47:56,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:47:57,227 WARN L234 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_5f29feb6-b7d2-48df-86da-930271f6eaad/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-18 20:47:57,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:57,300 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:47:57,364 WARN L234 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_5f29feb6-b7d2-48df-86da-930271f6eaad/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-18 20:47:57,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:47:57,447 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:47:57,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57 WrapperNode [2022-11-18 20:47:57,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:47:57,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:57,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:47:57,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:47:57,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,544 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-18 20:47:57,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:47:57,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:47:57,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:47:57,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:47:57,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,605 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:47:57,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:47:57,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:47:57,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:47:57,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (1/1) ... [2022-11-18 20:47:57,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:47:57,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:57,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:47:57,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:47:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:47:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:47:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:47:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:47:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:47:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:47:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:47:57,708 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:47:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:47:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:47:57,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:47:57,711 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:47:57,855 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:47:57,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:47:58,249 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:47:58,260 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:47:58,260 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-18 20:47:58,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:58 BoogieIcfgContainer [2022-11-18 20:47:58,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:47:58,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:47:58,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:47:58,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:47:58,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:47:56" (1/3) ... [2022-11-18 20:47:58,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0881d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:58, skipping insertion in model container [2022-11-18 20:47:58,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:47:57" (2/3) ... [2022-11-18 20:47:58,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0881d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:47:58, skipping insertion in model container [2022-11-18 20:47:58,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:47:58" (3/3) ... [2022-11-18 20:47:58,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-18 20:47:58,284 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:47:58,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:47:58,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 20:47:58,297 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:47:58,409 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:47:58,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-18 20:47:58,593 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-18 20:47:58,594 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:47:58,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1038 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-18 20:47:58,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-18 20:47:58,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-18 20:47:58,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:47:58,664 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;@15ab37e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:47:58,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 20:47:58,673 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-18 20:47:58,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:47:58,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:58,674 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:58,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:47:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash -729273671, now seen corresponding path program 1 times [2022-11-18 20:47:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:58,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983154671] [2022-11-18 20:47:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:59,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983154671] [2022-11-18 20:47:59,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983154671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:59,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547952058] [2022-11-18 20:47:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:59,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:59,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:59,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:47:59,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 220 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 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) [2022-11-18 20:47:59,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:59,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:47:59,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:59,314 INFO L130 PetriNetUnfolder]: 4/263 cut-off events. [2022-11-18 20:47:59,314 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 20:47:59,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 263 events. 4/263 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 39/272 useless extension candidates. Maximal degree in co-relation 140. Up to 15 conditions per place. [2022-11-18 20:47:59,324 INFO L137 encePairwiseOnDemand]: 189/223 looper letters, 17 selfloop transitions, 4 changer transitions 1/198 dead transitions. [2022-11-18 20:47:59,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 446 flow [2022-11-18 20:47:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-18 20:47:59,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8538116591928251 [2022-11-18 20:47:59,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-18 20:47:59,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-18 20:47:59,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:59,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-18 20:47:59,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,384 INFO L175 Difference]: Start difference. First operand has 193 places, 220 transitions, 448 flow. Second operand 5 states and 952 transitions. [2022-11-18 20:47:59,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 446 flow [2022-11-18 20:47:59,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:47:59,397 INFO L231 Difference]: Finished difference. Result has 198 places, 193 transitions, 420 flow [2022-11-18 20:47:59,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=198, PETRI_TRANSITIONS=193} [2022-11-18 20:47:59,407 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2022-11-18 20:47:59,408 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 193 transitions, 420 flow [2022-11-18 20:47:59,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 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) [2022-11-18 20:47:59,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:59,411 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:59,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:47:59,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:47:59,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1620695023, now seen corresponding path program 1 times [2022-11-18 20:47:59,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:59,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825224648] [2022-11-18 20:47:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:47:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:59,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825224648] [2022-11-18 20:47:59,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825224648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:47:59,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:47:59,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:47:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678942752] [2022-11-18 20:47:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:47:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:47:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:47:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:47:59,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:47:59,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 193 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:47:59,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:47:59,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:47:59,716 INFO L130 PetriNetUnfolder]: 4/261 cut-off events. [2022-11-18 20:47:59,716 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-18 20:47:59,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 261 events. 4/261 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 780 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 251. Up to 7 conditions per place. [2022-11-18 20:47:59,719 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 9 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-18 20:47:59,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 193 transitions, 452 flow [2022-11-18 20:47:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:47:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:47:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-11-18 20:47:59,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820627802690583 [2022-11-18 20:47:59,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-11-18 20:47:59,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-11-18 20:47:59,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:47:59,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-11-18 20:47:59,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,732 INFO L175 Difference]: Start difference. First operand has 198 places, 193 transitions, 420 flow. Second operand 5 states and 915 transitions. [2022-11-18 20:47:59,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 193 transitions, 452 flow [2022-11-18 20:47:59,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 193 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:47:59,742 INFO L231 Difference]: Finished difference. Result has 200 places, 193 transitions, 438 flow [2022-11-18 20:47:59,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=200, PETRI_TRANSITIONS=193} [2022-11-18 20:47:59,743 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 7 predicate places. [2022-11-18 20:47:59,744 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 193 transitions, 438 flow [2022-11-18 20:47:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:59,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:47:59,746 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] [2022-11-18 20:47:59,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:47:59,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:47:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1298061306, now seen corresponding path program 1 times [2022-11-18 20:47:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:59,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377821949] [2022-11-18 20:47:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:59,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:59,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377821949] [2022-11-18 20:47:59,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377821949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:47:59,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393708432] [2022-11-18 20:47:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:59,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:59,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:59,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:59,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:48:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:00,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:00,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:00,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393708432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:00,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:00,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:48:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802142723] [2022-11-18 20:48:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:48:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:48:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:00,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:48:00,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 193 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:00,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:48:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:00,346 INFO L130 PetriNetUnfolder]: 4/260 cut-off events. [2022-11-18 20:48:00,346 INFO L131 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2022-11-18 20:48:00,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 260 events. 4/260 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 773 event pairs, 0 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 249. Up to 10 conditions per place. [2022-11-18 20:48:00,349 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 11 selfloop transitions, 5 changer transitions 0/192 dead transitions. [2022-11-18 20:48:00,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 466 flow [2022-11-18 20:48:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:48:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:48:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2022-11-18 20:48:00,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217488789237668 [2022-11-18 20:48:00,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2022-11-18 20:48:00,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2022-11-18 20:48:00,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:00,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2022-11-18 20:48:00,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,358 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,359 INFO L175 Difference]: Start difference. First operand has 200 places, 193 transitions, 438 flow. Second operand 4 states and 733 transitions. [2022-11-18 20:48:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 192 transitions, 466 flow [2022-11-18 20:48:00,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:00,364 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 432 flow [2022-11-18 20:48:00,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2022-11-18 20:48:00,368 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 6 predicate places. [2022-11-18 20:48:00,368 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 432 flow [2022-11-18 20:48:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:00,370 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:00,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:48:00,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:00,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:48:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 950229597, now seen corresponding path program 1 times [2022-11-18 20:48:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:00,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689051260] [2022-11-18 20:48:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689051260] [2022-11-18 20:48:00,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689051260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:00,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656528204] [2022-11-18 20:48:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:00,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:00,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:48:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:00,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:00,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:00,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:00,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656528204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:00,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:00,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:48:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633766412] [2022-11-18 20:48:00,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:00,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:00,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:00,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:48:00,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:00,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:00,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:48:00,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:01,167 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-18 20:48:01,167 INFO L131 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2022-11-18 20:48:01,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 268 events. 4/268 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 239. Up to 7 conditions per place. [2022-11-18 20:48:01,171 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 18 selfloop transitions, 9 changer transitions 0/203 dead transitions. [2022-11-18 20:48:01,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 524 flow [2022-11-18 20:48:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1649 transitions. [2022-11-18 20:48:01,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216243148978575 [2022-11-18 20:48:01,177 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1649 transitions. [2022-11-18 20:48:01,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1649 transitions. [2022-11-18 20:48:01,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:01,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1649 transitions. [2022-11-18 20:48:01,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.22222222222223) internal successors, (1649), 9 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,192 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 432 flow. Second operand 9 states and 1649 transitions. [2022-11-18 20:48:01,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 524 flow [2022-11-18 20:48:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:01,199 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 478 flow [2022-11-18 20:48:01,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-18 20:48:01,201 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2022-11-18 20:48:01,201 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 478 flow [2022-11-18 20:48:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:01,203 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:01,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:01,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:01,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:48:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash -283872867, now seen corresponding path program 2 times [2022-11-18 20:48:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:01,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121743345] [2022-11-18 20:48:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:48:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121743345] [2022-11-18 20:48:01,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121743345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:01,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:01,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371558184] [2022-11-18 20:48:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:01,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:48:01,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:01,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:48:01,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:01,689 INFO L130 PetriNetUnfolder]: 3/205 cut-off events. [2022-11-18 20:48:01,689 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-18 20:48:01,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 205 events. 3/205 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 0 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 7 conditions per place. [2022-11-18 20:48:01,692 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 10 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-18 20:48:01,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 196 transitions, 506 flow [2022-11-18 20:48:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-18 20:48:01,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224215246636771 [2022-11-18 20:48:01,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-18 20:48:01,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-18 20:48:01,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:01,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-18 20:48:01,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,702 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 478 flow. Second operand 5 states and 917 transitions. [2022-11-18 20:48:01,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 196 transitions, 506 flow [2022-11-18 20:48:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 490 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:48:01,712 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 470 flow [2022-11-18 20:48:01,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-18 20:48:01,715 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 14 predicate places. [2022-11-18 20:48:01,716 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 470 flow [2022-11-18 20:48:01,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:01,717 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:48:01,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:48:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -635128358, now seen corresponding path program 1 times [2022-11-18 20:48:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:01,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636629500] [2022-11-18 20:48:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:02,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636629500] [2022-11-18 20:48:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636629500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:02,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811377206] [2022-11-18 20:48:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:02,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:02,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:48:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:02,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:48:02,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:02,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:02,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811377206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:02,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:02,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:48:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936355784] [2022-11-18 20:48:02,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:02,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:48:02,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 470 flow. Second operand has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:02,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:48:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:02,804 INFO L130 PetriNetUnfolder]: 3/233 cut-off events. [2022-11-18 20:48:02,804 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2022-11-18 20:48:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 233 events. 3/233 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-18 20:48:02,807 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 34 selfloop transitions, 21 changer transitions 0/229 dead transitions. [2022-11-18 20:48:02,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 734 flow [2022-11-18 20:48:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:48:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:48:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3839 transitions. [2022-11-18 20:48:02,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197736493700619 [2022-11-18 20:48:02,818 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3839 transitions. [2022-11-18 20:48:02,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3839 transitions. [2022-11-18 20:48:02,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:02,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3839 transitions. [2022-11-18 20:48:02,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.8095238095238) internal successors, (3839), 21 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,843 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,843 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 470 flow. Second operand 21 states and 3839 transitions. [2022-11-18 20:48:02,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 734 flow [2022-11-18 20:48:02,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:48:02,854 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 618 flow [2022-11-18 20:48:02,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=618, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2022-11-18 20:48:02,857 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2022-11-18 20:48:02,857 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 618 flow [2022-11-18 20:48:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:02,860 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:02,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:03,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:48:03,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:48:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:03,067 INFO L85 PathProgramCache]: Analyzing trace with hash -957918118, now seen corresponding path program 2 times [2022-11-18 20:48:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:03,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146309213] [2022-11-18 20:48:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:03,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146309213] [2022-11-18 20:48:03,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146309213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:03,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134875200] [2022-11-18 20:48:03,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:03,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:03,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:03,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:03,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:48:03,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:48:03,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:48:03,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:03,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:48:04,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134875200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:04,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:04,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:48:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938053588] [2022-11-18 20:48:04,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:48:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:48:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:48:04,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-18 20:48:04,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 618 flow. Second operand has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:04,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:04,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-18 20:48:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:04,655 INFO L130 PetriNetUnfolder]: 3/254 cut-off events. [2022-11-18 20:48:04,656 INFO L131 PetriNetUnfolder]: For 225/226 co-relation queries the response was YES. [2022-11-18 20:48:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 254 events. 3/254 cut-off events. For 225/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-18 20:48:04,659 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 46 selfloop transitions, 30 changer transitions 0/250 dead transitions. [2022-11-18 20:48:04,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 250 transitions, 980 flow [2022-11-18 20:48:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5479 transitions. [2022-11-18 20:48:04,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81898355754858 [2022-11-18 20:48:04,672 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5479 transitions. [2022-11-18 20:48:04,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5479 transitions. [2022-11-18 20:48:04,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:04,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5479 transitions. [2022-11-18 20:48:04,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 182.63333333333333) internal successors, (5479), 30 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:04,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:04,726 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:04,726 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 618 flow. Second operand 30 states and 5479 transitions. [2022-11-18 20:48:04,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 250 transitions, 980 flow [2022-11-18 20:48:04,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 250 transitions, 900 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-18 20:48:04,734 INFO L231 Difference]: Finished difference. Result has 253 places, 217 transitions, 716 flow [2022-11-18 20:48:04,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=716, PETRI_PLACES=253, PETRI_TRANSITIONS=217} [2022-11-18 20:48:04,735 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 60 predicate places. [2022-11-18 20:48:04,735 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 217 transitions, 716 flow [2022-11-18 20:48:04,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:04,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:04,738 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:04,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:04,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 20:48:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1973266736, now seen corresponding path program 3 times [2022-11-18 20:48:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:04,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130920606] [2022-11-18 20:48:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:04,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:48:04,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:48:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:48:05,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:48:05,039 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:48:05,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-18 20:48:05,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-18 20:48:05,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-18 20:48:05,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-18 20:48:05,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-18 20:48:05,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-18 20:48:05,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-18 20:48:05,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-18 20:48:05,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-18 20:48:05,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-18 20:48:05,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-18 20:48:05,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-18 20:48:05,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-18 20:48:05,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-18 20:48:05,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-18 20:48:05,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-18 20:48:05,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-18 20:48:05,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-18 20:48:05,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-18 20:48:05,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:48:05,047 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-18 20:48:05,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:48:05,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:48:05,093 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:48:05,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-18 20:48:05,179 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-18 20:48:05,179 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-18 20:48:05,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2069 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-18 20:48:05,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-18 20:48:05,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-18 20:48:05,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:48:05,195 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;@15ab37e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:48:05,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:48:05,198 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-18 20:48:05,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:48:05,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:05,199 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:05,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1575634649, now seen corresponding path program 1 times [2022-11-18 20:48:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:05,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007347288] [2022-11-18 20:48:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:05,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007347288] [2022-11-18 20:48:05,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007347288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:05,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:05,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:05,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750501988] [2022-11-18 20:48:05,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:05,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:05,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:05,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:05,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:05,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:05,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 302 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 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) [2022-11-18 20:48:05,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:05,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:05,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:05,395 INFO L130 PetriNetUnfolder]: 9/433 cut-off events. [2022-11-18 20:48:05,395 INFO L131 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2022-11-18 20:48:05,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 433 events. 9/433 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1707 event pairs, 0 based on Foata normal form. 90/470 useless extension candidates. Maximal degree in co-relation 289. Up to 19 conditions per place. [2022-11-18 20:48:05,401 INFO L137 encePairwiseOnDemand]: 256/302 looper letters, 19 selfloop transitions, 4 changer transitions 1/267 dead transitions. [2022-11-18 20:48:05,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 598 flow [2022-11-18 20:48:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1286 transitions. [2022-11-18 20:48:05,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516556291390729 [2022-11-18 20:48:05,405 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1286 transitions. [2022-11-18 20:48:05,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1286 transitions. [2022-11-18 20:48:05,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:05,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1286 transitions. [2022-11-18 20:48:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.2) internal successors, (1286), 5 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,412 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,412 INFO L175 Difference]: Start difference. First operand has 262 places, 302 transitions, 622 flow. Second operand 5 states and 1286 transitions. [2022-11-18 20:48:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 598 flow [2022-11-18 20:48:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:48:05,418 INFO L231 Difference]: Finished difference. Result has 266 places, 262 transitions, 568 flow [2022-11-18 20:48:05,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=266, PETRI_TRANSITIONS=262} [2022-11-18 20:48:05,419 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 4 predicate places. [2022-11-18 20:48:05,420 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 262 transitions, 568 flow [2022-11-18 20:48:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 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) [2022-11-18 20:48:05,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:05,420 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:05,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:48:05,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1338975825, now seen corresponding path program 1 times [2022-11-18 20:48:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:05,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623085934] [2022-11-18 20:48:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:48:05,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:05,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623085934] [2022-11-18 20:48:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623085934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:05,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:05,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486851740] [2022-11-18 20:48:05,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:05,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:05,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 262 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:05,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:05,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:05,593 INFO L130 PetriNetUnfolder]: 9/431 cut-off events. [2022-11-18 20:48:05,594 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-18 20:48:05,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 431 events. 9/431 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1703 event pairs, 0 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 432. Up to 11 conditions per place. [2022-11-18 20:48:05,602 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2022-11-18 20:48:05,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 604 flow [2022-11-18 20:48:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-18 20:48:05,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-18 20:48:05,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-18 20:48:05,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-18 20:48:05,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:05,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-18 20:48:05,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,615 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,615 INFO L175 Difference]: Start difference. First operand has 266 places, 262 transitions, 568 flow. Second operand 5 states and 1237 transitions. [2022-11-18 20:48:05,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 604 flow [2022-11-18 20:48:05,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:05,625 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 586 flow [2022-11-18 20:48:05,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-18 20:48:05,626 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 6 predicate places. [2022-11-18 20:48:05,627 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 586 flow [2022-11-18 20:48:05,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:05,628 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] [2022-11-18 20:48:05,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:48:05,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1441423220, now seen corresponding path program 1 times [2022-11-18 20:48:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:05,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240576373] [2022-11-18 20:48:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240576373] [2022-11-18 20:48:05,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240576373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660574393] [2022-11-18 20:48:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:05,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:05,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:05,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:48:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:05,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:05,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:05,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:05,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660574393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:05,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:05,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:48:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270619444] [2022-11-18 20:48:05,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:05,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:48:05,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:48:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:05,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:05,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:05,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:05,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:05,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:06,039 INFO L130 PetriNetUnfolder]: 9/430 cut-off events. [2022-11-18 20:48:06,039 INFO L131 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2022-11-18 20:48:06,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 430 events. 9/430 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1704 event pairs, 0 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 430. Up to 14 conditions per place. [2022-11-18 20:48:06,046 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/261 dead transitions. [2022-11-18 20:48:06,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 261 transitions, 618 flow [2022-11-18 20:48:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:48:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:48:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-18 20:48:06,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-18 20:48:06,050 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-18 20:48:06,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-18 20:48:06,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:06,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-18 20:48:06,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,058 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 586 flow. Second operand 4 states and 991 transitions. [2022-11-18 20:48:06,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 261 transitions, 618 flow [2022-11-18 20:48:06,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:06,065 INFO L231 Difference]: Finished difference. Result has 267 places, 261 transitions, 580 flow [2022-11-18 20:48:06,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=267, PETRI_TRANSITIONS=261} [2022-11-18 20:48:06,068 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 5 predicate places. [2022-11-18 20:48:06,068 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 261 transitions, 580 flow [2022-11-18 20:48:06,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:06,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:06,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:06,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:06,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 460715416, now seen corresponding path program 1 times [2022-11-18 20:48:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:06,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432571428] [2022-11-18 20:48:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432571428] [2022-11-18 20:48:06,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432571428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417934475] [2022-11-18 20:48:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:06,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:06,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:48:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:06,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:06,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:06,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:06,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417934475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:06,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:06,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:48:06,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545917525] [2022-11-18 20:48:06,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:06,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:06,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:06,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:06,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 261 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:06,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:06,786 INFO L130 PetriNetUnfolder]: 9/438 cut-off events. [2022-11-18 20:48:06,787 INFO L131 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2022-11-18 20:48:06,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 438 events. 9/438 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1699 event pairs, 0 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 420. Up to 11 conditions per place. [2022-11-18 20:48:06,796 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 20 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2022-11-18 20:48:06,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 676 flow [2022-11-18 20:48:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2227 transitions. [2022-11-18 20:48:06,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193524650478293 [2022-11-18 20:48:06,803 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2227 transitions. [2022-11-18 20:48:06,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2227 transitions. [2022-11-18 20:48:06,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:06,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2227 transitions. [2022-11-18 20:48:06,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.44444444444446) internal successors, (2227), 9 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,819 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,819 INFO L175 Difference]: Start difference. First operand has 267 places, 261 transitions, 580 flow. Second operand 9 states and 2227 transitions. [2022-11-18 20:48:06,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 676 flow [2022-11-18 20:48:06,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 272 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:06,825 INFO L231 Difference]: Finished difference. Result has 276 places, 265 transitions, 626 flow [2022-11-18 20:48:06,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=276, PETRI_TRANSITIONS=265} [2022-11-18 20:48:06,827 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 14 predicate places. [2022-11-18 20:48:06,828 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 265 transitions, 626 flow [2022-11-18 20:48:06,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:06,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:06,829 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:06,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:48:07,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -604189544, now seen corresponding path program 2 times [2022-11-18 20:48:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839483636] [2022-11-18 20:48:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:48:07,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:07,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839483636] [2022-11-18 20:48:07,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839483636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:07,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:07,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889533577] [2022-11-18 20:48:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:07,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:07,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:07,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 265 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 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) [2022-11-18 20:48:07,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:07,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:07,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:07,248 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-18 20:48:07,248 INFO L131 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2022-11-18 20:48:07,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 384 events. 7/384 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1323 event pairs, 0 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 388. Up to 21 conditions per place. [2022-11-18 20:48:07,256 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 19 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-18 20:48:07,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 272 transitions, 686 flow [2022-11-18 20:48:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2022-11-18 20:48:07,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251655629139073 [2022-11-18 20:48:07,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2022-11-18 20:48:07,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2022-11-18 20:48:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2022-11-18 20:48:07,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,292 INFO L175 Difference]: Start difference. First operand has 276 places, 265 transitions, 626 flow. Second operand 5 states and 1246 transitions. [2022-11-18 20:48:07,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 272 transitions, 686 flow [2022-11-18 20:48:07,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 272 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:48:07,299 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 642 flow [2022-11-18 20:48:07,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-18 20:48:07,300 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 17 predicate places. [2022-11-18 20:48:07,301 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 642 flow [2022-11-18 20:48:07,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 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) [2022-11-18 20:48:07,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:07,302 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2022-11-18 20:48:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:48:07,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1003419068, now seen corresponding path program 1 times [2022-11-18 20:48:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:07,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176104863] [2022-11-18 20:48:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:07,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:48:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:07,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176104863] [2022-11-18 20:48:07,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176104863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:07,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:07,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46852089] [2022-11-18 20:48:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:07,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:07,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:07,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:07,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:07,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:07,503 INFO L130 PetriNetUnfolder]: 7/383 cut-off events. [2022-11-18 20:48:07,504 INFO L131 PetriNetUnfolder]: For 48/87 co-relation queries the response was YES. [2022-11-18 20:48:07,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 383 events. 7/383 cut-off events. For 48/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1320 event pairs, 0 based on Foata normal form. 7/354 useless extension candidates. Maximal degree in co-relation 395. Up to 10 conditions per place. [2022-11-18 20:48:07,512 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/268 dead transitions. [2022-11-18 20:48:07,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 268 transitions, 678 flow [2022-11-18 20:48:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-18 20:48:07,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-18 20:48:07,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-18 20:48:07,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-18 20:48:07,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:07,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-18 20:48:07,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,526 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 642 flow. Second operand 5 states and 1237 transitions. [2022-11-18 20:48:07,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 268 transitions, 678 flow [2022-11-18 20:48:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:07,533 INFO L231 Difference]: Finished difference. Result has 282 places, 268 transitions, 660 flow [2022-11-18 20:48:07,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=660, PETRI_PLACES=282, PETRI_TRANSITIONS=268} [2022-11-18 20:48:07,535 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 20 predicate places. [2022-11-18 20:48:07,536 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 268 transitions, 660 flow [2022-11-18 20:48:07,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:07,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:07,537 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:48:07,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1041219272, now seen corresponding path program 1 times [2022-11-18 20:48:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183176191] [2022-11-18 20:48:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:07,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183176191] [2022-11-18 20:48:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183176191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087390522] [2022-11-18 20:48:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:07,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:07,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:07,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:48:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:07,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:48:07,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:07,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087390522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:08,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:08,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:48:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847568831] [2022-11-18 20:48:08,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:08,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:08,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:08,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 268 transitions, 660 flow. Second operand has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:08,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:08,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:08,465 INFO L130 PetriNetUnfolder]: 7/411 cut-off events. [2022-11-18 20:48:08,465 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-11-18 20:48:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 411 events. 7/411 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1315 event pairs, 0 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 390. Up to 11 conditions per place. [2022-11-18 20:48:08,473 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 36 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2022-11-18 20:48:08,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 303 transitions, 928 flow [2022-11-18 20:48:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:48:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:48:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5185 transitions. [2022-11-18 20:48:08,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8175654367707348 [2022-11-18 20:48:08,482 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5185 transitions. [2022-11-18 20:48:08,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5185 transitions. [2022-11-18 20:48:08,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:08,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5185 transitions. [2022-11-18 20:48:08,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.9047619047619) internal successors, (5185), 21 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,507 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,507 INFO L175 Difference]: Start difference. First operand has 282 places, 268 transitions, 660 flow. Second operand 21 states and 5185 transitions. [2022-11-18 20:48:08,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 303 transitions, 928 flow [2022-11-18 20:48:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 303 transitions, 916 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:08,516 INFO L231 Difference]: Finished difference. Result has 304 places, 281 transitions, 804 flow [2022-11-18 20:48:08,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=804, PETRI_PLACES=304, PETRI_TRANSITIONS=281} [2022-11-18 20:48:08,517 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 42 predicate places. [2022-11-18 20:48:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 281 transitions, 804 flow [2022-11-18 20:48:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:08,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:08,519 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:08,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:08,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:48:08,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2024936248, now seen corresponding path program 2 times [2022-11-18 20:48:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:08,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110340987] [2022-11-18 20:48:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:09,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110340987] [2022-11-18 20:48:09,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110340987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:09,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226468402] [2022-11-18 20:48:09,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:09,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:09,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:09,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:09,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:48:09,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:48:09,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:09,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:48:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:09,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:09,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226468402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:09,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:09,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:48:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986173786] [2022-11-18 20:48:09,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:48:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:48:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:48:09,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:09,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 281 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:09,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:09,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:10,175 INFO L130 PetriNetUnfolder]: 7/432 cut-off events. [2022-11-18 20:48:10,176 INFO L131 PetriNetUnfolder]: For 243/247 co-relation queries the response was YES. [2022-11-18 20:48:10,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 432 events. 7/432 cut-off events. For 243/247 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1317 event pairs, 0 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 513. Up to 12 conditions per place. [2022-11-18 20:48:10,184 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 48 selfloop transitions, 30 changer transitions 0/324 dead transitions. [2022-11-18 20:48:10,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 324 transitions, 1170 flow [2022-11-18 20:48:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7401 transitions. [2022-11-18 20:48:10,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168874172185431 [2022-11-18 20:48:10,195 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7401 transitions. [2022-11-18 20:48:10,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7401 transitions. [2022-11-18 20:48:10,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:10,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7401 transitions. [2022-11-18 20:48:10,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 246.7) internal successors, (7401), 30 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,229 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,230 INFO L175 Difference]: Start difference. First operand has 304 places, 281 transitions, 804 flow. Second operand 30 states and 7401 transitions. [2022-11-18 20:48:10,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 324 transitions, 1170 flow [2022-11-18 20:48:10,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 324 transitions, 1090 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-18 20:48:10,239 INFO L231 Difference]: Finished difference. Result has 329 places, 291 transitions, 902 flow [2022-11-18 20:48:10,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=902, PETRI_PLACES=329, PETRI_TRANSITIONS=291} [2022-11-18 20:48:10,241 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 67 predicate places. [2022-11-18 20:48:10,241 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 291 transitions, 902 flow [2022-11-18 20:48:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:10,244 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:10,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:10,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:48:10,450 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:10,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1096394928, now seen corresponding path program 3 times [2022-11-18 20:48:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41554935] [2022-11-18 20:48:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:10,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:10,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41554935] [2022-11-18 20:48:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41554935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:10,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554859534] [2022-11-18 20:48:10,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:48:10,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:10,677 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:10,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:48:10,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:48:10,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:10,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:10,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:10,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:10,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554859534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:10,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:10,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:48:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851135304] [2022-11-18 20:48:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:10,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:48:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:48:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:10,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:10,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 291 transitions, 902 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:10,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:10,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:10,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:11,066 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-18 20:48:11,067 INFO L131 PetriNetUnfolder]: For 213/249 co-relation queries the response was YES. [2022-11-18 20:48:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 431 events. 7/431 cut-off events. For 213/249 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 3/398 useless extension candidates. Maximal degree in co-relation 454. Up to 17 conditions per place. [2022-11-18 20:48:11,075 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-18 20:48:11,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 290 transitions, 934 flow [2022-11-18 20:48:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:48:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:48:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-18 20:48:11,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-18 20:48:11,078 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-18 20:48:11,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-18 20:48:11,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-18 20:48:11,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,085 INFO L175 Difference]: Start difference. First operand has 329 places, 291 transitions, 902 flow. Second operand 4 states and 991 transitions. [2022-11-18 20:48:11,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 290 transitions, 934 flow [2022-11-18 20:48:11,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 290 transitions, 888 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:48:11,095 INFO L231 Difference]: Finished difference. Result has 313 places, 290 transitions, 862 flow [2022-11-18 20:48:11,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=313, PETRI_TRANSITIONS=290} [2022-11-18 20:48:11,096 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 51 predicate places. [2022-11-18 20:48:11,097 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 290 transitions, 862 flow [2022-11-18 20:48:11,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:11,098 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:11,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:11,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:48:11,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1921684219, now seen corresponding path program 1 times [2022-11-18 20:48:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:11,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19880026] [2022-11-18 20:48:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:11,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19880026] [2022-11-18 20:48:11,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19880026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380570409] [2022-11-18 20:48:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:11,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:11,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:11,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:48:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:11,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:11,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:11,644 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:11,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:11,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380570409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:11,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:11,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:48:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29850467] [2022-11-18 20:48:11,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:11,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-18 20:48:11,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 290 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:11,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-18 20:48:11,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:11,826 INFO L130 PetriNetUnfolder]: 3/263 cut-off events. [2022-11-18 20:48:11,826 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-18 20:48:11,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 263 events. 3/263 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-18 20:48:11,830 INFO L137 encePairwiseOnDemand]: 297/302 looper letters, 13 selfloop transitions, 7 changer transitions 0/224 dead transitions. [2022-11-18 20:48:11,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 224 transitions, 764 flow [2022-11-18 20:48:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2218 transitions. [2022-11-18 20:48:11,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8160412067696836 [2022-11-18 20:48:11,834 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2218 transitions. [2022-11-18 20:48:11,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2218 transitions. [2022-11-18 20:48:11,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:11,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2218 transitions. [2022-11-18 20:48:11,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.44444444444446) internal successors, (2218), 9 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,845 INFO L175 Difference]: Start difference. First operand has 313 places, 290 transitions, 862 flow. Second operand 9 states and 2218 transitions. [2022-11-18 20:48:11,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 224 transitions, 764 flow [2022-11-18 20:48:11,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 224 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:11,853 INFO L231 Difference]: Finished difference. Result has 250 places, 219 transitions, 714 flow [2022-11-18 20:48:11,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=250, PETRI_TRANSITIONS=219} [2022-11-18 20:48:11,854 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -12 predicate places. [2022-11-18 20:48:11,854 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 219 transitions, 714 flow [2022-11-18 20:48:11,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:11,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:11,855 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:12,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:48:12,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1265664375, now seen corresponding path program 1 times [2022-11-18 20:48:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:12,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857885133] [2022-11-18 20:48:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:12,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857885133] [2022-11-18 20:48:12,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857885133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:12,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:12,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:48:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330724559] [2022-11-18 20:48:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:12,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:12,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:12,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 302 [2022-11-18 20:48:12,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 219 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:12,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:12,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 302 [2022-11-18 20:48:12,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:13,524 INFO L130 PetriNetUnfolder]: 336/1915 cut-off events. [2022-11-18 20:48:13,524 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-18 20:48:13,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 1915 events. 336/1915 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15079 event pairs, 91 based on Foata normal form. 0/1770 useless extension candidates. Maximal degree in co-relation 2546. Up to 291 conditions per place. [2022-11-18 20:48:13,550 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 80 selfloop transitions, 13 changer transitions 0/271 dead transitions. [2022-11-18 20:48:13,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 1029 flow [2022-11-18 20:48:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:48:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:48:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2374 transitions. [2022-11-18 20:48:13,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7146297411198074 [2022-11-18 20:48:13,557 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2374 transitions. [2022-11-18 20:48:13,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2374 transitions. [2022-11-18 20:48:13,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:13,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2374 transitions. [2022-11-18 20:48:13,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 215.8181818181818) internal successors, (2374), 11 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:13,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 302.0) internal successors, (3624), 12 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:13,570 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 302.0) internal successors, (3624), 12 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:13,570 INFO L175 Difference]: Start difference. First operand has 250 places, 219 transitions, 714 flow. Second operand 11 states and 2374 transitions. [2022-11-18 20:48:13,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 1029 flow [2022-11-18 20:48:13,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 1006 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-18 20:48:13,581 INFO L231 Difference]: Finished difference. Result has 257 places, 228 transitions, 774 flow [2022-11-18 20:48:13,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=257, PETRI_TRANSITIONS=228} [2022-11-18 20:48:13,584 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -5 predicate places. [2022-11-18 20:48:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 228 transitions, 774 flow [2022-11-18 20:48:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:13,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:13,585 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 20:48:13,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:48:13,586 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:48:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2002685866, now seen corresponding path program 1 times [2022-11-18 20:48:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:13,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750118949] [2022-11-18 20:48:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:13,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:48:13,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:48:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:48:13,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:48:13,683 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:48:13,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-18 20:48:13,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-18 20:48:13,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-18 20:48:13,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-18 20:48:13,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-18 20:48:13,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-18 20:48:13,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-18 20:48:13,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-18 20:48:13,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-18 20:48:13,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-18 20:48:13,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-18 20:48:13,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-18 20:48:13,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-18 20:48:13,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-18 20:48:13,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-18 20:48:13,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-18 20:48:13,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-18 20:48:13,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-18 20:48:13,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-18 20:48:13,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-18 20:48:13,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-18 20:48:13,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-18 20:48:13,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-18 20:48:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:48:13,691 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:13,692 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:48:13,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:48:13,760 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:48:13,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-18 20:48:13,915 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-18 20:48:13,915 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-18 20:48:13,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3393 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-18 20:48:13,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-18 20:48:13,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-18 20:48:13,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:48:13,960 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;@15ab37e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:48:13,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-18 20:48:13,963 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-18 20:48:13,964 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:48:13,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:13,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:13,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash 343171972, now seen corresponding path program 1 times [2022-11-18 20:48:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046151704] [2022-11-18 20:48:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:14,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:14,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046151704] [2022-11-18 20:48:14,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046151704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:14,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:14,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107247015] [2022-11-18 20:48:14,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:14,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:14,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:14,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 381 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:14,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:14,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:14,195 INFO L130 PetriNetUnfolder]: 16/639 cut-off events. [2022-11-18 20:48:14,195 INFO L131 PetriNetUnfolder]: For 55/69 co-relation queries the response was YES. [2022-11-18 20:48:14,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 639 events. 16/639 cut-off events. For 55/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2954 event pairs, 1 based on Foata normal form. 208/766 useless extension candidates. Maximal degree in co-relation 466. Up to 28 conditions per place. [2022-11-18 20:48:14,211 INFO L137 encePairwiseOnDemand]: 323/381 looper letters, 21 selfloop transitions, 4 changer transitions 1/333 dead transitions. [2022-11-18 20:48:14,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 333 transitions, 746 flow [2022-11-18 20:48:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1620 transitions. [2022-11-18 20:48:14,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-18 20:48:14,214 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1620 transitions. [2022-11-18 20:48:14,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1620 transitions. [2022-11-18 20:48:14,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:14,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1620 transitions. [2022-11-18 20:48:14,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,223 INFO L175 Difference]: Start difference. First operand has 329 places, 381 transitions, 792 flow. Second operand 5 states and 1620 transitions. [2022-11-18 20:48:14,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 333 transitions, 746 flow [2022-11-18 20:48:14,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:48:14,230 INFO L231 Difference]: Finished difference. Result has 332 places, 328 transitions, 712 flow [2022-11-18 20:48:14,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=332, PETRI_TRANSITIONS=328} [2022-11-18 20:48:14,231 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 3 predicate places. [2022-11-18 20:48:14,231 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 328 transitions, 712 flow [2022-11-18 20:48:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:14,232 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:14,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:48:14,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash 388285263, now seen corresponding path program 1 times [2022-11-18 20:48:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:14,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471632245] [2022-11-18 20:48:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:48:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:14,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471632245] [2022-11-18 20:48:14,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471632245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:14,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:14,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092094814] [2022-11-18 20:48:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:14,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:14,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 328 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:14,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:14,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:14,470 INFO L130 PetriNetUnfolder]: 16/637 cut-off events. [2022-11-18 20:48:14,470 INFO L131 PetriNetUnfolder]: For 58/72 co-relation queries the response was YES. [2022-11-18 20:48:14,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 637 events. 16/637 cut-off events. For 58/72 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2931 event pairs, 1 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 660. Up to 20 conditions per place. [2022-11-18 20:48:14,486 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/328 dead transitions. [2022-11-18 20:48:14,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 328 transitions, 752 flow [2022-11-18 20:48:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-18 20:48:14,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-18 20:48:14,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-18 20:48:14,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-18 20:48:14,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:14,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-18 20:48:14,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,497 INFO L175 Difference]: Start difference. First operand has 332 places, 328 transitions, 712 flow. Second operand 5 states and 1559 transitions. [2022-11-18 20:48:14,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 328 transitions, 752 flow [2022-11-18 20:48:14,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:14,504 INFO L231 Difference]: Finished difference. Result has 334 places, 328 transitions, 730 flow [2022-11-18 20:48:14,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=334, PETRI_TRANSITIONS=328} [2022-11-18 20:48:14,506 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2022-11-18 20:48:14,506 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 328 transitions, 730 flow [2022-11-18 20:48:14,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:14,507 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] [2022-11-18 20:48:14,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:48:14,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -848057519, now seen corresponding path program 1 times [2022-11-18 20:48:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552670838] [2022-11-18 20:48:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:14,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552670838] [2022-11-18 20:48:14,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552670838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:14,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647840770] [2022-11-18 20:48:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:14,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:14,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:14,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:14,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:48:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:14,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:14,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:14,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:14,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647840770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:14,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:48:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60475280] [2022-11-18 20:48:14,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:48:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:48:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:14,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:14,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 328 transitions, 730 flow. Second operand has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 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) [2022-11-18 20:48:14,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:14,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:14,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:14,946 INFO L130 PetriNetUnfolder]: 16/636 cut-off events. [2022-11-18 20:48:14,947 INFO L131 PetriNetUnfolder]: For 65/79 co-relation queries the response was YES. [2022-11-18 20:48:14,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 636 events. 16/636 cut-off events. For 65/79 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2919 event pairs, 1 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 658. Up to 23 conditions per place. [2022-11-18 20:48:14,963 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2022-11-18 20:48:14,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 327 transitions, 766 flow [2022-11-18 20:48:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:48:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:48:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-18 20:48:14,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-18 20:48:14,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-18 20:48:14,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-18 20:48:14,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:14,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-18 20:48:14,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:14,976 INFO L175 Difference]: Start difference. First operand has 334 places, 328 transitions, 730 flow. Second operand 4 states and 1249 transitions. [2022-11-18 20:48:14,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 327 transitions, 766 flow [2022-11-18 20:48:14,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 327 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:14,983 INFO L231 Difference]: Finished difference. Result has 333 places, 327 transitions, 724 flow [2022-11-18 20:48:14,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=333, PETRI_TRANSITIONS=327} [2022-11-18 20:48:14,985 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 4 predicate places. [2022-11-18 20:48:14,985 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 327 transitions, 724 flow [2022-11-18 20:48:14,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 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) [2022-11-18 20:48:14,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:14,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:14,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:15,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:15,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1725622718, now seen corresponding path program 1 times [2022-11-18 20:48:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:15,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784297070] [2022-11-18 20:48:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:15,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784297070] [2022-11-18 20:48:15,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784297070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:15,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10199311] [2022-11-18 20:48:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:15,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:15,314 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:15,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:48:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:15,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:15,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:15,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:15,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10199311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:15,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:15,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:48:15,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560393188] [2022-11-18 20:48:15,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:15,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:15,542 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:15,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 327 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:15,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:15,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:15,788 INFO L130 PetriNetUnfolder]: 16/644 cut-off events. [2022-11-18 20:48:15,788 INFO L131 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2022-11-18 20:48:15,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 644 events. 16/644 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2910 event pairs, 1 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 648. Up to 20 conditions per place. [2022-11-18 20:48:15,804 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/338 dead transitions. [2022-11-18 20:48:15,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 338 transitions, 824 flow [2022-11-18 20:48:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-18 20:48:15,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-18 20:48:15,809 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-18 20:48:15,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-18 20:48:15,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:15,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-18 20:48:15,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,822 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,822 INFO L175 Difference]: Start difference. First operand has 333 places, 327 transitions, 724 flow. Second operand 9 states and 2805 transitions. [2022-11-18 20:48:15,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 338 transitions, 824 flow [2022-11-18 20:48:15,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 810 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:15,830 INFO L231 Difference]: Finished difference. Result has 342 places, 331 transitions, 770 flow [2022-11-18 20:48:15,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=342, PETRI_TRANSITIONS=331} [2022-11-18 20:48:15,831 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 13 predicate places. [2022-11-18 20:48:15,831 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 331 transitions, 770 flow [2022-11-18 20:48:15,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:15,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:15,833 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:15,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:16,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:48:16,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash -671355934, now seen corresponding path program 2 times [2022-11-18 20:48:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:16,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004629135] [2022-11-18 20:48:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:48:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004629135] [2022-11-18 20:48:16,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004629135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:16,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:16,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238207994] [2022-11-18 20:48:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:16,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:16,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:16,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 331 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:16,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:16,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:16,348 INFO L130 PetriNetUnfolder]: 14/590 cut-off events. [2022-11-18 20:48:16,348 INFO L131 PetriNetUnfolder]: For 133/308 co-relation queries the response was YES. [2022-11-18 20:48:16,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 590 events. 14/590 cut-off events. For 133/308 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2557 event pairs, 1 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 626. Up to 40 conditions per place. [2022-11-18 20:48:16,362 INFO L137 encePairwiseOnDemand]: 374/381 looper letters, 21 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-18 20:48:16,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 834 flow [2022-11-18 20:48:16,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-11-18 20:48:16,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230971128608924 [2022-11-18 20:48:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-11-18 20:48:16,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-11-18 20:48:16,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:16,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-11-18 20:48:16,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,376 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,376 INFO L175 Difference]: Start difference. First operand has 342 places, 331 transitions, 770 flow. Second operand 5 states and 1568 transitions. [2022-11-18 20:48:16,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 834 flow [2022-11-18 20:48:16,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 338 transitions, 818 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:48:16,384 INFO L231 Difference]: Finished difference. Result has 345 places, 334 transitions, 786 flow [2022-11-18 20:48:16,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=345, PETRI_TRANSITIONS=334} [2022-11-18 20:48:16,387 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 16 predicate places. [2022-11-18 20:48:16,388 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 334 transitions, 786 flow [2022-11-18 20:48:16,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:16,389 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2022-11-18 20:48:16,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:48:16,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash -921263589, now seen corresponding path program 1 times [2022-11-18 20:48:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:16,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549071957] [2022-11-18 20:48:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:48:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:16,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549071957] [2022-11-18 20:48:16,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549071957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:16,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:16,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:48:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643254708] [2022-11-18 20:48:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:16,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:48:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:48:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:48:16,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:16,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 334 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:16,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:16,665 INFO L130 PetriNetUnfolder]: 14/588 cut-off events. [2022-11-18 20:48:16,666 INFO L131 PetriNetUnfolder]: For 125/286 co-relation queries the response was YES. [2022-11-18 20:48:16,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 588 events. 14/588 cut-off events. For 125/286 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2537 event pairs, 1 based on Foata normal form. 11/538 useless extension candidates. Maximal degree in co-relation 636. Up to 20 conditions per place. [2022-11-18 20:48:16,682 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-18 20:48:16,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 334 transitions, 826 flow [2022-11-18 20:48:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:48:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:48:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-18 20:48:16,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-18 20:48:16,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-18 20:48:16,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-18 20:48:16,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:16,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-18 20:48:16,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,695 INFO L175 Difference]: Start difference. First operand has 345 places, 334 transitions, 786 flow. Second operand 5 states and 1559 transitions. [2022-11-18 20:48:16,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 334 transitions, 826 flow [2022-11-18 20:48:16,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 334 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:48:16,704 INFO L231 Difference]: Finished difference. Result has 348 places, 334 transitions, 804 flow [2022-11-18 20:48:16,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=348, PETRI_TRANSITIONS=334} [2022-11-18 20:48:16,705 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 19 predicate places. [2022-11-18 20:48:16,705 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 334 transitions, 804 flow [2022-11-18 20:48:16,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:16,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:16,706 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:16,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:48:16,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1505600958, now seen corresponding path program 1 times [2022-11-18 20:48:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:16,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640351558] [2022-11-18 20:48:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:16,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640351558] [2022-11-18 20:48:16,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640351558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:16,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459449889] [2022-11-18 20:48:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:16,872 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:16,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:48:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:17,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:48:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:17,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:17,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459449889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:17,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:17,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:48:17,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632202816] [2022-11-18 20:48:17,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:17,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:48:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:48:17,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:48:17,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:17,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 334 transitions, 804 flow. Second operand has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:17,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:17,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:17,735 INFO L130 PetriNetUnfolder]: 14/616 cut-off events. [2022-11-18 20:48:17,736 INFO L131 PetriNetUnfolder]: For 120/134 co-relation queries the response was YES. [2022-11-18 20:48:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 616 events. 14/616 cut-off events. For 120/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 626. Up to 20 conditions per place. [2022-11-18 20:48:17,754 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 38 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-18 20:48:17,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 369 transitions, 1076 flow [2022-11-18 20:48:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:48:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:48:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6531 transitions. [2022-11-18 20:48:17,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2022-11-18 20:48:17,767 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6531 transitions. [2022-11-18 20:48:17,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6531 transitions. [2022-11-18 20:48:17,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:17,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6531 transitions. [2022-11-18 20:48:17,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,798 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,798 INFO L175 Difference]: Start difference. First operand has 348 places, 334 transitions, 804 flow. Second operand 21 states and 6531 transitions. [2022-11-18 20:48:17,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 369 transitions, 1076 flow [2022-11-18 20:48:17,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 369 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:17,808 INFO L231 Difference]: Finished difference. Result has 370 places, 347 transitions, 948 flow [2022-11-18 20:48:17,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=948, PETRI_PLACES=370, PETRI_TRANSITIONS=347} [2022-11-18 20:48:17,809 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 41 predicate places. [2022-11-18 20:48:17,809 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 347 transitions, 948 flow [2022-11-18 20:48:17,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:17,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:17,812 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:17,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:18,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1320400258, now seen corresponding path program 2 times [2022-11-18 20:48:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:18,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657814793] [2022-11-18 20:48:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:18,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657814793] [2022-11-18 20:48:18,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657814793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486804384] [2022-11-18 20:48:18,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:48:18,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:18,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:18,371 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:18,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:48:18,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:48:18,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:18,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:48:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:18,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:48:18,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486804384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:18,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:18,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:48:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976594175] [2022-11-18 20:48:18,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:48:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:48:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:48:18,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:18,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 347 transitions, 948 flow. Second operand has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:18,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:18,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:18,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:19,543 INFO L130 PetriNetUnfolder]: 14/637 cut-off events. [2022-11-18 20:48:19,544 INFO L131 PetriNetUnfolder]: For 280/294 co-relation queries the response was YES. [2022-11-18 20:48:19,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 637 events. 14/637 cut-off events. For 280/294 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 3/579 useless extension candidates. Maximal degree in co-relation 696. Up to 20 conditions per place. [2022-11-18 20:48:19,561 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 50 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2022-11-18 20:48:19,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1318 flow [2022-11-18 20:48:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:48:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:48:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9323 transitions. [2022-11-18 20:48:19,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815660542432196 [2022-11-18 20:48:19,585 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9323 transitions. [2022-11-18 20:48:19,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9323 transitions. [2022-11-18 20:48:19,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:19,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9323 transitions. [2022-11-18 20:48:19,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.76666666666665) internal successors, (9323), 30 states have internal predecessors, (9323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,645 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,645 INFO L175 Difference]: Start difference. First operand has 370 places, 347 transitions, 948 flow. Second operand 30 states and 9323 transitions. [2022-11-18 20:48:19,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1318 flow [2022-11-18 20:48:19,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 390 transitions, 1238 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-18 20:48:19,661 INFO L231 Difference]: Finished difference. Result has 395 places, 357 transitions, 1046 flow [2022-11-18 20:48:19,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=395, PETRI_TRANSITIONS=357} [2022-11-18 20:48:19,663 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 66 predicate places. [2022-11-18 20:48:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 357 transitions, 1046 flow [2022-11-18 20:48:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:19,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:19,667 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:19,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:19,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:48:19,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1166110477, now seen corresponding path program 3 times [2022-11-18 20:48:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:19,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128003810] [2022-11-18 20:48:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:19,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:20,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:20,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128003810] [2022-11-18 20:48:20,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128003810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181476975] [2022-11-18 20:48:20,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:48:20,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:20,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:20,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:48:20,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:48:20,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:20,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:20,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:20,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:48:20,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181476975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:20,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:48:20,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:48:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286456381] [2022-11-18 20:48:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:20,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:48:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:48:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:20,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:20,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 357 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:20,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:20,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:20,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:20,518 INFO L130 PetriNetUnfolder]: 14/635 cut-off events. [2022-11-18 20:48:20,518 INFO L131 PetriNetUnfolder]: For 287/434 co-relation queries the response was YES. [2022-11-18 20:48:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 635 events. 14/635 cut-off events. For 287/434 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2516 event pairs, 1 based on Foata normal form. 5/579 useless extension candidates. Maximal degree in co-relation 644. Up to 30 conditions per place. [2022-11-18 20:48:20,535 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-18 20:48:20,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 356 transitions, 1082 flow [2022-11-18 20:48:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:48:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:48:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-18 20:48:20,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-18 20:48:20,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-18 20:48:20,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-18 20:48:20,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:20,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-18 20:48:20,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:20,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:20,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:20,545 INFO L175 Difference]: Start difference. First operand has 395 places, 357 transitions, 1046 flow. Second operand 4 states and 1249 transitions. [2022-11-18 20:48:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 356 transitions, 1082 flow [2022-11-18 20:48:20,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 356 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:48:20,556 INFO L231 Difference]: Finished difference. Result has 379 places, 356 transitions, 1006 flow [2022-11-18 20:48:20,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1006, PETRI_PLACES=379, PETRI_TRANSITIONS=356} [2022-11-18 20:48:20,557 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 50 predicate places. [2022-11-18 20:48:20,557 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 356 transitions, 1006 flow [2022-11-18 20:48:20,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:20,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:20,558 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:20,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:20,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:48:20,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -144955637, now seen corresponding path program 1 times [2022-11-18 20:48:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:20,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243098203] [2022-11-18 20:48:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:20,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:20,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243098203] [2022-11-18 20:48:20,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243098203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:48:20,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934606364] [2022-11-18 20:48:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:20,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:20,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:20,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:48:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:21,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:48:21,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:21,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:21,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934606364] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:21,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:48:21,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:48:21,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939691193] [2022-11-18 20:48:21,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:21,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-18 20:48:21,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 356 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:21,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-18 20:48:21,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:21,469 INFO L130 PetriNetUnfolder]: 10/531 cut-off events. [2022-11-18 20:48:21,470 INFO L131 PetriNetUnfolder]: For 254/271 co-relation queries the response was YES. [2022-11-18 20:48:21,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 531 events. 10/531 cut-off events. For 254/271 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1494 event pairs, 5 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 542. Up to 17 conditions per place. [2022-11-18 20:48:21,481 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-18 20:48:21,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 1106 flow [2022-11-18 20:48:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:48:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:48:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-18 20:48:21,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-18 20:48:21,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-18 20:48:21,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-18 20:48:21,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:21,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-18 20:48:21,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,503 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,503 INFO L175 Difference]: Start difference. First operand has 379 places, 356 transitions, 1006 flow. Second operand 9 states and 2805 transitions. [2022-11-18 20:48:21,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 1106 flow [2022-11-18 20:48:21,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:48:21,514 INFO L231 Difference]: Finished difference. Result has 388 places, 360 transitions, 1052 flow [2022-11-18 20:48:21,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=388, PETRI_TRANSITIONS=360} [2022-11-18 20:48:21,521 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 59 predicate places. [2022-11-18 20:48:21,521 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 360 transitions, 1052 flow [2022-11-18 20:48:21,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:21,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:21,522 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:21,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f29feb6-b7d2-48df-86da-930271f6eaad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:21,729 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1277518588, now seen corresponding path program 1 times [2022-11-18 20:48:21,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:21,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426991057] [2022-11-18 20:48:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426991057] [2022-11-18 20:48:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426991057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:22,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:22,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:48:22,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859369949] [2022-11-18 20:48:22,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:22,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:22,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:22,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 381 [2022-11-18 20:48:22,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 360 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 267.5) internal successors, (2675), 10 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:22,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:22,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 381 [2022-11-18 20:48:22,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:48:53,659 INFO L130 PetriNetUnfolder]: 42271/124013 cut-off events. [2022-11-18 20:48:53,659 INFO L131 PetriNetUnfolder]: For 3789/3789 co-relation queries the response was YES. [2022-11-18 20:48:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185595 conditions, 124013 events. 42271/124013 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 3808. Compared 1825550 event pairs, 9759 based on Foata normal form. 0/115056 useless extension candidates. Maximal degree in co-relation 185324. Up to 31935 conditions per place. [2022-11-18 20:48:55,841 INFO L137 encePairwiseOnDemand]: 365/381 looper letters, 288 selfloop transitions, 38 changer transitions 0/625 dead transitions. [2022-11-18 20:48:55,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 625 transitions, 2340 flow [2022-11-18 20:48:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:48:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:48:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4574 transitions. [2022-11-18 20:48:55,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503280839895013 [2022-11-18 20:48:55,851 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4574 transitions. [2022-11-18 20:48:55,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4574 transitions. [2022-11-18 20:48:55,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:48:55,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4574 transitions. [2022-11-18 20:48:55,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 285.875) internal successors, (4574), 16 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 381.0) internal successors, (6477), 17 states have internal predecessors, (6477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,872 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 381.0) internal successors, (6477), 17 states have internal predecessors, (6477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,872 INFO L175 Difference]: Start difference. First operand has 388 places, 360 transitions, 1052 flow. Second operand 16 states and 4574 transitions. [2022-11-18 20:48:55,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 625 transitions, 2340 flow [2022-11-18 20:48:55,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 625 transitions, 2324 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:48:55,894 INFO L231 Difference]: Finished difference. Result has 409 places, 397 transitions, 1317 flow [2022-11-18 20:48:55,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1317, PETRI_PLACES=409, PETRI_TRANSITIONS=397} [2022-11-18 20:48:55,897 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 80 predicate places. [2022-11-18 20:48:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 397 transitions, 1317 flow [2022-11-18 20:48:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 267.5) internal successors, (2675), 10 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:55,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:48:55,899 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:55,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:48:55,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 20:48:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2087681273, now seen corresponding path program 1 times [2022-11-18 20:48:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:55,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321543345] [2022-11-18 20:48:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:48:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321543345] [2022-11-18 20:48:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321543345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:56,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:48:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222836256] [2022-11-18 20:48:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:56,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:48:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:48:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:48:56,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 381 [2022-11-18 20:48:56,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 397 transitions, 1317 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:56,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:48:56,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 381 [2022-11-18 20:48:56,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand