./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8 --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 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c --- 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-2329fc7 [2022-12-13 19:39:43,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:39:43,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:39:43,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:39:43,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:39:43,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:39:43,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:39:43,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:39:43,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:39:43,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:39:43,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:39:43,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:39:43,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:39:43,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:39:43,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:39:43,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:39:43,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:39:43,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:39:43,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:39:43,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:39:43,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:39:43,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:39:43,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:39:43,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:39:43,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:39:43,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:39:43,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:39:43,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:39:43,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:39:43,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:39:43,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:39:43,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:39:43,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:39:43,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:39:43,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:39:43,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:39:43,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:39:43,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:39:43,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:39:43,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:39:43,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:39:43,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:39:43,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:39:43,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:39:43,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:39:43,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:39:43,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:39:43,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:39:43,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:39:43,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:39:43,201 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:39:43,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:39:43,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:39:43,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:39:43,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:39:43,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:39:43,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:39:43,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:39:43,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:39:43,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:39:43,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:39:43,214 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:39:43,214 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c [2022-12-13 19:39:43,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:39:43,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:39:43,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:39:43,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:39:43,409 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:39:43,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-12-13 19:39:45,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:39:46,161 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:39:46,161 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/sv-benchmarks/c/pthread/fib_unsafe-12.i [2022-12-13 19:39:46,169 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/data/2e8117b36/a7b445c114f74ab5af97a3e73eaf627c/FLAG76a3e527d [2022-12-13 19:39:46,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/data/2e8117b36/a7b445c114f74ab5af97a3e73eaf627c [2022-12-13 19:39:46,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:39:46,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:39:46,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:39:46,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:39:46,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:39:46,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:46,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2addfa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46, skipping insertion in model container [2022-12-13 19:39:46,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:46,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:39:46,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:39:46,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-12-13 19:39:46,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:39:46,903 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:39:46,933 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/sv-benchmarks/c/pthread/fib_unsafe-12.i[30243,30256] [2022-12-13 19:39:46,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,942 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:39:46,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:39:46,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:39:46,968 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:39:46,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46 WrapperNode [2022-12-13 19:39:46,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:39:46,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:39:46,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:39:46,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:39:46,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,029 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-13 19:39:47,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:39:47,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:39:47,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:39:47,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:39:47,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:39:47,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:39:47,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:39:47,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:39:47,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (1/1) ... [2022-12-13 19:39:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:39:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:47,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:39:47,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:39:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 19:39:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 19:39:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 19:39:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 19:39:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:39:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:39:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:39:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:39:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:39:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:39:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:39:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:39:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:39:47,121 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:39:47,226 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:39:47,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:39:47,404 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:39:47,425 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:39:47,425 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 19:39:47,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:39:47 BoogieIcfgContainer [2022-12-13 19:39:47,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:39:47,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:39:47,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:39:47,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:39:47,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:39:46" (1/3) ... [2022-12-13 19:39:47,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa20b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:39:47, skipping insertion in model container [2022-12-13 19:39:47,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:39:46" (2/3) ... [2022-12-13 19:39:47,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa20b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:39:47, skipping insertion in model container [2022-12-13 19:39:47,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:39:47" (3/3) ... [2022-12-13 19:39:47,436 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2022-12-13 19:39:47,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:39:47,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:39:47,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 19:39:47,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:39:47,504 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:39:47,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 19:39:47,563 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 19:39:47,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:39:47,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 19:39:47,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 19:39:47,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-12-13 19:39:47,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:39:47,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 19:39:47,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 19:39:47,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-12-13 19:39:47,603 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 19:39:47,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:39:47,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 19:39:47,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-12-13 19:39:50,359 INFO L134 LiptonReduction]: Checked pairs total: 3304 [2022-12-13 19:39:50,360 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-12-13 19:39:50,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:39:50,375 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;@1e558217, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:39:50,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 19:39:50,378 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 19:39:50,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:39:50,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:50,378 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:39:50,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 14140798, now seen corresponding path program 1 times [2022-12-13 19:39:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:50,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808525221] [2022-12-13 19:39:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808525221] [2022-12-13 19:39:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808525221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:50,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:39:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750651735] [2022-12-13 19:39:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:50,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:50,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:50,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:50,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:50,754 INFO L130 PetriNetUnfolder]: 583/864 cut-off events. [2022-12-13 19:39:50,754 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:39:50,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3544 event pairs, 92 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2022-12-13 19:39:50,765 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2022-12-13 19:39:50,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2022-12-13 19:39:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:50,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-12-13 19:39:50,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2022-12-13 19:39:50,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-12-13 19:39:50,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-12-13 19:39:50,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:50,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-12-13 19:39:50,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,786 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2022-12-13 19:39:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2022-12-13 19:39:50,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:50,790 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2022-12-13 19:39:50,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-12-13 19:39:50,794 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-12-13 19:39:50,794 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2022-12-13 19:39:50,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:50,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:39:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:39:50,795 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 14140849, now seen corresponding path program 1 times [2022-12-13 19:39:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525668930] [2022-12-13 19:39:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525668930] [2022-12-13 19:39:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525668930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:50,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:50,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:39:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418218949] [2022-12-13 19:39:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:50,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:50,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:50,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:50,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:50,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:50,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:51,021 INFO L130 PetriNetUnfolder]: 699/1050 cut-off events. [2022-12-13 19:39:51,021 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 19:39:51,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 1050 events. 699/1050 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4638 event pairs, 277 based on Foata normal form. 50/528 useless extension candidates. Maximal degree in co-relation 2656. Up to 611 conditions per place. [2022-12-13 19:39:51,029 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-12-13 19:39:51,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 216 flow [2022-12-13 19:39:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-12-13 19:39:51,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5049645390070922 [2022-12-13 19:39:51,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-12-13 19:39:51,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-12-13 19:39:51,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:51,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-12-13 19:39:51,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,038 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 356 transitions. [2022-12-13 19:39:51,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 216 flow [2022-12-13 19:39:51,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:51,039 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 97 flow [2022-12-13 19:39:51,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-12-13 19:39:51,040 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 19:39:51,040 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 97 flow [2022-12-13 19:39:51,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:51,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:39:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:39:51,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash 438366704, now seen corresponding path program 1 times [2022-12-13 19:39:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038224479] [2022-12-13 19:39:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:51,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038224479] [2022-12-13 19:39:51,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038224479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:51,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:51,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:39:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089356509] [2022-12-13 19:39:51,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:51,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:51,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:51,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:51,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:51,180 INFO L130 PetriNetUnfolder]: 625/938 cut-off events. [2022-12-13 19:39:51,180 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-12-13 19:39:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 938 events. 625/938 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3853 event pairs, 435 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 2500. Up to 938 conditions per place. [2022-12-13 19:39:51,189 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 19:39:51,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 141 flow [2022-12-13 19:39:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-13 19:39:51,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47801418439716314 [2022-12-13 19:39:51,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2022-12-13 19:39:51,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2022-12-13 19:39:51,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:51,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2022-12-13 19:39:51,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,199 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 97 flow. Second operand 3 states and 337 transitions. [2022-12-13 19:39:51,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 141 flow [2022-12-13 19:39:51,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:51,201 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2022-12-13 19:39:51,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2022-12-13 19:39:51,202 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 19:39:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2022-12-13 19:39:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:51,203 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:39:51,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:39:51,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:51,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash 438366653, now seen corresponding path program 1 times [2022-12-13 19:39:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:51,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599256160] [2022-12-13 19:39:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:51,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599256160] [2022-12-13 19:39:51,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599256160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:51,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858457988] [2022-12-13 19:39:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:51,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:51,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:51,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:39:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:39:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:39:51,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858457988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:51,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:39:51,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 19:39:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231744183] [2022-12-13 19:39:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:51,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:39:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:39:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:39:51,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2022-12-13 19:39:51,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:51,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2022-12-13 19:39:51,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:51,548 INFO L130 PetriNetUnfolder]: 563/844 cut-off events. [2022-12-13 19:39:51,548 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-12-13 19:39:51,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 844 events. 563/844 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3482 event pairs, 207 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 2220. Up to 530 conditions per place. [2022-12-13 19:39:51,554 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 33 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2022-12-13 19:39:51,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 208 flow [2022-12-13 19:39:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:39:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:39:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 19:39:51,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2022-12-13 19:39:51,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 19:39:51,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 19:39:51,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:51,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 19:39:51,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,561 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 455 transitions. [2022-12-13 19:39:51,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 208 flow [2022-12-13 19:39:51,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:51,563 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 124 flow [2022-12-13 19:39:51,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-13 19:39:51,564 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-12-13 19:39:51,564 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 124 flow [2022-12-13 19:39:51,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:51,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:39:51,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:39:51,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:51,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:51,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash 438366654, now seen corresponding path program 1 times [2022-12-13 19:39:51,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:51,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921467112] [2022-12-13 19:39:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:51,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921467112] [2022-12-13 19:39:51,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921467112] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:51,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264321983] [2022-12-13 19:39:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:51,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:51,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:39:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:39:51,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:51,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264321983] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:51,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:51,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 19:39:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080704358] [2022-12-13 19:39:51,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:39:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:39:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:39:51,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:51,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 124 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:51,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:51,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:52,226 INFO L130 PetriNetUnfolder]: 983/1468 cut-off events. [2022-12-13 19:39:52,226 INFO L131 PetriNetUnfolder]: For 948/948 co-relation queries the response was YES. [2022-12-13 19:39:52,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 1468 events. 983/1468 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6526 event pairs, 75 based on Foata normal form. 162/1196 useless extension candidates. Maximal degree in co-relation 4530. Up to 837 conditions per place. [2022-12-13 19:39:52,241 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 67 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2022-12-13 19:39:52,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 84 transitions, 500 flow [2022-12-13 19:39:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:39:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:39:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2022-12-13 19:39:52,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2022-12-13 19:39:52,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2022-12-13 19:39:52,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2022-12-13 19:39:52,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:52,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2022-12-13 19:39:52,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,255 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,256 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 124 flow. Second operand 6 states and 700 transitions. [2022-12-13 19:39:52,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 84 transitions, 500 flow [2022-12-13 19:39:52,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:52,260 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 309 flow [2022-12-13 19:39:52,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2022-12-13 19:39:52,261 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2022-12-13 19:39:52,261 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 309 flow [2022-12-13 19:39:52,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:52,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:39:52,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:39:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:52,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 706457306, now seen corresponding path program 1 times [2022-12-13 19:39:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138181798] [2022-12-13 19:39:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:52,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138181798] [2022-12-13 19:39:52,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138181798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:52,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:52,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:39:52,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747064842] [2022-12-13 19:39:52,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:52,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:52,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:52,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:52,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:52,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:52,709 INFO L130 PetriNetUnfolder]: 1463/2179 cut-off events. [2022-12-13 19:39:52,709 INFO L131 PetriNetUnfolder]: For 6251/6251 co-relation queries the response was YES. [2022-12-13 19:39:52,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 2179 events. 1463/2179 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10516 event pairs, 388 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 8323. Up to 1263 conditions per place. [2022-12-13 19:39:52,719 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-13 19:39:52,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 733 flow [2022-12-13 19:39:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 19:39:52,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 19:39:52,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 19:39:52,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 19:39:52,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:52,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 19:39:52,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,723 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 309 flow. Second operand 3 states and 348 transitions. [2022-12-13 19:39:52,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 733 flow [2022-12-13 19:39:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 666 flow, removed 30 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:52,730 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 289 flow [2022-12-13 19:39:52,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 19:39:52,730 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2022-12-13 19:39:52,730 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 289 flow [2022-12-13 19:39:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:52,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:39:52,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:39:52,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 706457209, now seen corresponding path program 1 times [2022-12-13 19:39:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:52,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927230208] [2022-12-13 19:39:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:52,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927230208] [2022-12-13 19:39:52,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927230208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:52,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:52,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:39:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730925711] [2022-12-13 19:39:52,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:52,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:52,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:52,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:52,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:52,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:52,954 INFO L130 PetriNetUnfolder]: 1303/1942 cut-off events. [2022-12-13 19:39:52,954 INFO L131 PetriNetUnfolder]: For 4548/4548 co-relation queries the response was YES. [2022-12-13 19:39:52,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7468 conditions, 1942 events. 1303/1942 cut-off events. For 4548/4548 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9160 event pairs, 388 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 7449. Up to 1026 conditions per place. [2022-12-13 19:39:52,963 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 67 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-12-13 19:39:52,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 674 flow [2022-12-13 19:39:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-12-13 19:39:52,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2022-12-13 19:39:52,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-12-13 19:39:52,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-12-13 19:39:52,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:52,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-12-13 19:39:52,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,966 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 289 flow. Second operand 3 states and 340 transitions. [2022-12-13 19:39:52,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 674 flow [2022-12-13 19:39:52,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:52,970 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 305 flow [2022-12-13 19:39:52,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 19:39:52,971 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2022-12-13 19:39:52,971 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 305 flow [2022-12-13 19:39:52,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:52,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:52,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:39:52,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:39:52,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 706457277, now seen corresponding path program 1 times [2022-12-13 19:39:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:52,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491756561] [2022-12-13 19:39:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:52,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:52,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491756561] [2022-12-13 19:39:52,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491756561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:52,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:52,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:39:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866415662] [2022-12-13 19:39:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:52,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:52,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:52,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:52,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:53,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:53,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:53,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:53,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:53,156 INFO L130 PetriNetUnfolder]: 1143/1705 cut-off events. [2022-12-13 19:39:53,156 INFO L131 PetriNetUnfolder]: For 4603/4603 co-relation queries the response was YES. [2022-12-13 19:39:53,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 1705 events. 1143/1705 cut-off events. For 4603/4603 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7866 event pairs, 277 based on Foata normal form. 77/1481 useless extension candidates. Maximal degree in co-relation 6895. Up to 1026 conditions per place. [2022-12-13 19:39:53,165 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 66 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2022-12-13 19:39:53,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 682 flow [2022-12-13 19:39:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 19:39:53,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 19:39:53,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 19:39:53,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 19:39:53,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:53,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 19:39:53,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,169 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 305 flow. Second operand 3 states and 339 transitions. [2022-12-13 19:39:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 682 flow [2022-12-13 19:39:53,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 673 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:39:53,173 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 298 flow [2022-12-13 19:39:53,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2022-12-13 19:39:53,173 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-12-13 19:39:53,174 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 298 flow [2022-12-13 19:39:53,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:53,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:39:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:39:53,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash 706455305, now seen corresponding path program 1 times [2022-12-13 19:39:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:53,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815195928] [2022-12-13 19:39:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815195928] [2022-12-13 19:39:53,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815195928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:53,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:53,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:39:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768491660] [2022-12-13 19:39:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:53,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:53,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:53,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:53,374 INFO L130 PetriNetUnfolder]: 1087/1621 cut-off events. [2022-12-13 19:39:53,374 INFO L131 PetriNetUnfolder]: For 3332/3332 co-relation queries the response was YES. [2022-12-13 19:39:53,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1621 events. 1087/1621 cut-off events. For 3332/3332 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6952 event pairs, 332 based on Foata normal form. 77/1447 useless extension candidates. Maximal degree in co-relation 6653. Up to 1128 conditions per place. [2022-12-13 19:39:53,383 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-12-13 19:39:53,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 469 flow [2022-12-13 19:39:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 19:39:53,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 19:39:53,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 19:39:53,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 19:39:53,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:53,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 19:39:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,386 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 298 flow. Second operand 3 states and 348 transitions. [2022-12-13 19:39:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 469 flow [2022-12-13 19:39:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:53,390 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 317 flow [2022-12-13 19:39:53,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 19:39:53,391 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 19:39:53,391 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 317 flow [2022-12-13 19:39:53,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:53,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:53,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:39:53,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 425340463, now seen corresponding path program 1 times [2022-12-13 19:39:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886165746] [2022-12-13 19:39:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886165746] [2022-12-13 19:39:53,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886165746] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:53,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013950382] [2022-12-13 19:39:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:53,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:53,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:39:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:53,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:39:53,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:53,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:39:53,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013950382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:53,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:39:53,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 19:39:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891696927] [2022-12-13 19:39:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:39:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:39:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:39:53,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:53,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:53,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:53,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:53,656 INFO L130 PetriNetUnfolder]: 935/1396 cut-off events. [2022-12-13 19:39:53,656 INFO L131 PetriNetUnfolder]: For 4448/4448 co-relation queries the response was YES. [2022-12-13 19:39:53,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5969 conditions, 1396 events. 935/1396 cut-off events. For 4448/4448 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6221 event pairs, 162 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 5946. Up to 973 conditions per place. [2022-12-13 19:39:53,668 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 19:39:53,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 707 flow [2022-12-13 19:39:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:39:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:39:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-12-13 19:39:53,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4776595744680851 [2022-12-13 19:39:53,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-12-13 19:39:53,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-12-13 19:39:53,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:53,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-12-13 19:39:53,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,677 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 317 flow. Second operand 4 states and 449 transitions. [2022-12-13 19:39:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 707 flow [2022-12-13 19:39:53,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:53,682 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 311 flow [2022-12-13 19:39:53,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2022-12-13 19:39:53,683 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-13 19:39:53,683 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 311 flow [2022-12-13 19:39:53,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:53,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:53,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:53,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:39:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:39:53,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 425340434, now seen corresponding path program 1 times [2022-12-13 19:39:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006590896] [2022-12-13 19:39:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:53,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006590896] [2022-12-13 19:39:53,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006590896] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498703423] [2022-12-13 19:39:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:53,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:53,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:53,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:39:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:53,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:39:53,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:54,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498703423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:54,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:54,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 19:39:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893650820] [2022-12-13 19:39:54,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:54,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:39:54,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:39:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:39:54,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2022-12-13 19:39:54,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:54,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2022-12-13 19:39:54,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:54,430 INFO L130 PetriNetUnfolder]: 2224/3269 cut-off events. [2022-12-13 19:39:54,431 INFO L131 PetriNetUnfolder]: For 11767/11767 co-relation queries the response was YES. [2022-12-13 19:39:54,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13812 conditions, 3269 events. 2224/3269 cut-off events. For 11767/11767 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15788 event pairs, 162 based on Foata normal form. 219/2986 useless extension candidates. Maximal degree in co-relation 13788. Up to 945 conditions per place. [2022-12-13 19:39:54,446 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 234 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-12-13 19:39:54,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 243 transitions, 2635 flow [2022-12-13 19:39:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:39:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:39:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1012 transitions. [2022-12-13 19:39:54,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47848699763593383 [2022-12-13 19:39:54,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1012 transitions. [2022-12-13 19:39:54,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1012 transitions. [2022-12-13 19:39:54,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:54,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1012 transitions. [2022-12-13 19:39:54,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.44444444444444) internal successors, (1012), 9 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,453 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 311 flow. Second operand 9 states and 1012 transitions. [2022-12-13 19:39:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 243 transitions, 2635 flow [2022-12-13 19:39:54,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 243 transitions, 2632 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:54,459 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 370 flow [2022-12-13 19:39:54,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2022-12-13 19:39:54,460 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-12-13 19:39:54,460 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 370 flow [2022-12-13 19:39:54,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:54,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:54,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:39:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:39:54,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:54,662 INFO L85 PathProgramCache]: Analyzing trace with hash 425340366, now seen corresponding path program 1 times [2022-12-13 19:39:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:54,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254170415] [2022-12-13 19:39:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:54,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254170415] [2022-12-13 19:39:54,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254170415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:54,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997558598] [2022-12-13 19:39:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:54,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:54,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:54,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:39:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:54,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:39:54,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:54,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:39:54,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997558598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:54,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:39:54,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 19:39:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233706019] [2022-12-13 19:39:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:39:54,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:39:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:39:54,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:54,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:54,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:54,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:54,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:55,105 INFO L130 PetriNetUnfolder]: 1695/2521 cut-off events. [2022-12-13 19:39:55,105 INFO L131 PetriNetUnfolder]: For 9589/9589 co-relation queries the response was YES. [2022-12-13 19:39:55,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11543 conditions, 2521 events. 1695/2521 cut-off events. For 9589/9589 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11934 event pairs, 162 based on Foata normal form. 292/2648 useless extension candidates. Maximal degree in co-relation 11516. Up to 2098 conditions per place. [2022-12-13 19:39:55,115 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 66 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-12-13 19:39:55,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 732 flow [2022-12-13 19:39:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:39:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:39:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-12-13 19:39:55,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2022-12-13 19:39:55,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-12-13 19:39:55,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-12-13 19:39:55,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:55,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-12-13 19:39:55,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,122 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 370 flow. Second operand 4 states and 448 transitions. [2022-12-13 19:39:55,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 732 flow [2022-12-13 19:39:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:55,127 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 339 flow [2022-12-13 19:39:55,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 19:39:55,128 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2022-12-13 19:39:55,128 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 339 flow [2022-12-13 19:39:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:55,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:55,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:39:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:55,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash 425278415, now seen corresponding path program 1 times [2022-12-13 19:39:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521462270] [2022-12-13 19:39:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:55,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521462270] [2022-12-13 19:39:55,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521462270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:39:55,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:39:55,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:39:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037761704] [2022-12-13 19:39:55,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:39:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:39:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:39:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:39:55,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 19:39:55,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:55,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 19:39:55,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:55,655 INFO L130 PetriNetUnfolder]: 1431/2158 cut-off events. [2022-12-13 19:39:55,655 INFO L131 PetriNetUnfolder]: For 7821/7821 co-relation queries the response was YES. [2022-12-13 19:39:55,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 2158 events. 1431/2158 cut-off events. For 7821/7821 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9802 event pairs, 1013 based on Foata normal form. 0/2158 useless extension candidates. Maximal degree in co-relation 9670. Up to 2158 conditions per place. [2022-12-13 19:39:55,666 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 19:39:55,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 36 transitions, 373 flow [2022-12-13 19:39:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:39:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:39:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2022-12-13 19:39:55,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47092198581560285 [2022-12-13 19:39:55,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2022-12-13 19:39:55,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2022-12-13 19:39:55,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:55,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2022-12-13 19:39:55,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,671 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 339 flow. Second operand 3 states and 332 transitions. [2022-12-13 19:39:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 36 transitions, 373 flow [2022-12-13 19:39:55,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:55,676 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 300 flow [2022-12-13 19:39:55,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2022-12-13 19:39:55,677 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2022-12-13 19:39:55,677 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 300 flow [2022-12-13 19:39:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:55,678 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 19:39:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:39:55,678 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1612686017, now seen corresponding path program 2 times [2022-12-13 19:39:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671379032] [2022-12-13 19:39:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:55,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671379032] [2022-12-13 19:39:55,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671379032] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602930689] [2022-12-13 19:39:55,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:39:55,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:55,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:55,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:55,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:39:55,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:39:55,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:39:55,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:39:55,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:55,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:55,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602930689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:55,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:55,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:39:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645992685] [2022-12-13 19:39:55,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:55,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:39:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:55,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:39:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:39:55,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:55,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 300 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:55,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:55,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:56,574 INFO L130 PetriNetUnfolder]: 2423/3658 cut-off events. [2022-12-13 19:39:56,574 INFO L131 PetriNetUnfolder]: For 12728/12728 co-relation queries the response was YES. [2022-12-13 19:39:56,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16301 conditions, 3658 events. 2423/3658 cut-off events. For 12728/12728 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17869 event pairs, 175 based on Foata normal form. 496/4154 useless extension candidates. Maximal degree in co-relation 16274. Up to 1533 conditions per place. [2022-12-13 19:39:56,597 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 149 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2022-12-13 19:39:56,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 181 transitions, 1539 flow [2022-12-13 19:39:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:39:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:39:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-12-13 19:39:56,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2022-12-13 19:39:56,600 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-12-13 19:39:56,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-12-13 19:39:56,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:56,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-12-13 19:39:56,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:56,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:56,605 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:56,605 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 300 flow. Second operand 12 states and 1370 transitions. [2022-12-13 19:39:56,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 181 transitions, 1539 flow [2022-12-13 19:39:56,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 181 transitions, 1538 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:39:56,614 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 642 flow [2022-12-13 19:39:56,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=642, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-13 19:39:56,614 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-13 19:39:56,614 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 642 flow [2022-12-13 19:39:56,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:56,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:56,615 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:56,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:39:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 19:39:56,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash 298729377, now seen corresponding path program 1 times [2022-12-13 19:39:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:56,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147609431] [2022-12-13 19:39:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147609431] [2022-12-13 19:39:56,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147609431] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856201597] [2022-12-13 19:39:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:56,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:56,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:56,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:39:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:56,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:39:56,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:56,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:56,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856201597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:56,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:56,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 19:39:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920768499] [2022-12-13 19:39:56,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:56,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:39:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:39:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:39:57,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:57,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 642 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:57,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:57,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:57,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:57,559 INFO L130 PetriNetUnfolder]: 3127/4714 cut-off events. [2022-12-13 19:39:57,559 INFO L131 PetriNetUnfolder]: For 32393/32393 co-relation queries the response was YES. [2022-12-13 19:39:57,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 4714 events. 3127/4714 cut-off events. For 32393/32393 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24646 event pairs, 230 based on Foata normal form. 308/5022 useless extension candidates. Maximal degree in co-relation 24393. Up to 3357 conditions per place. [2022-12-13 19:39:57,578 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 115 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2022-12-13 19:39:57,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 1473 flow [2022-12-13 19:39:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:39:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:39:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2022-12-13 19:39:57,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 19:39:57,580 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2022-12-13 19:39:57,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2022-12-13 19:39:57,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:57,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2022-12-13 19:39:57,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:57,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:57,584 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:57,584 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 642 flow. Second operand 8 states and 904 transitions. [2022-12-13 19:39:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 1473 flow [2022-12-13 19:39:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 1387 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:57,623 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 838 flow [2022-12-13 19:39:57,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2022-12-13 19:39:57,623 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2022-12-13 19:39:57,623 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 838 flow [2022-12-13 19:39:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:57,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:57,624 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:57,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:39:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:57,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1164663805, now seen corresponding path program 2 times [2022-12-13 19:39:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:57,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017008355] [2022-12-13 19:39:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017008355] [2022-12-13 19:39:57,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017008355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945985675] [2022-12-13 19:39:57,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:39:57,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:57,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:57,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:57,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:39:57,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:39:57,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:39:57,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 19:39:57,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:58,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:58,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945985675] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:58,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:58,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:39:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862935520] [2022-12-13 19:39:58,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:39:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:39:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:39:58,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2022-12-13 19:39:58,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 838 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:58,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:58,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2022-12-13 19:39:58,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:39:59,344 INFO L130 PetriNetUnfolder]: 6487/9754 cut-off events. [2022-12-13 19:39:59,345 INFO L131 PetriNetUnfolder]: For 110723/110723 co-relation queries the response was YES. [2022-12-13 19:39:59,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51877 conditions, 9754 events. 6487/9754 cut-off events. For 110723/110723 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 53573 event pairs, 325 based on Foata normal form. 840/10594 useless extension candidates. Maximal degree in co-relation 51838. Up to 2941 conditions per place. [2022-12-13 19:39:59,398 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2022-12-13 19:39:59,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9790 flow [2022-12-13 19:39:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:39:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:39:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-12-13 19:39:59,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726950354609929 [2022-12-13 19:39:59,401 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-12-13 19:39:59,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-12-13 19:39:59,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:39:59,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-12-13 19:39:59,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:59,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:59,407 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:59,407 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 838 flow. Second operand 12 states and 1333 transitions. [2022-12-13 19:39:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9790 flow [2022-12-13 19:39:59,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9074 flow, removed 330 selfloop flow, removed 2 redundant places. [2022-12-13 19:39:59,470 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 856 flow [2022-12-13 19:39:59,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=856, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2022-12-13 19:39:59,470 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2022-12-13 19:39:59,470 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 856 flow [2022-12-13 19:39:59,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:59,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:39:59,471 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:59,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:39:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 19:39:59,674 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:39:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1588219877, now seen corresponding path program 1 times [2022-12-13 19:39:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983235841] [2022-12-13 19:39:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983235841] [2022-12-13 19:39:59,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983235841] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:39:59,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969505364] [2022-12-13 19:39:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:59,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:59,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:59,775 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:59,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:39:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:59,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:39:59,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:59,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:39:59,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969505364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:59,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:39:59,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:39:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646448751] [2022-12-13 19:39:59,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:39:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:39:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:39:59,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:39:59,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 856 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:39:59,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:39:59,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:39:59,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:40:01,838 INFO L130 PetriNetUnfolder]: 9719/14783 cut-off events. [2022-12-13 19:40:01,839 INFO L131 PetriNetUnfolder]: For 148597/148597 co-relation queries the response was YES. [2022-12-13 19:40:01,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79136 conditions, 14783 events. 9719/14783 cut-off events. For 148597/148597 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 91739 event pairs, 344 based on Foata normal form. 658/15441 useless extension candidates. Maximal degree in co-relation 79091. Up to 5519 conditions per place. [2022-12-13 19:40:01,911 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 74 changer transitions 0/330 dead transitions. [2022-12-13 19:40:01,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 330 transitions, 3782 flow [2022-12-13 19:40:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:40:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 19:40:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-12-13 19:40:01,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 19:40:01,914 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-12-13 19:40:01,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-12-13 19:40:01,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:40:01,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-12-13 19:40:01,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.0) internal successors, (1695), 15 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:01,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:01,920 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:01,920 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 856 flow. Second operand 15 states and 1695 transitions. [2022-12-13 19:40:01,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 330 transitions, 3782 flow [2022-12-13 19:40:02,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 330 transitions, 3494 flow, removed 91 selfloop flow, removed 5 redundant places. [2022-12-13 19:40:02,185 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 1580 flow [2022-12-13 19:40:02,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1580, PETRI_PLACES=106, PETRI_TRANSITIONS=115} [2022-12-13 19:40:02,186 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2022-12-13 19:40:02,186 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 1580 flow [2022-12-13 19:40:02,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:02,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:40:02,187 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:02,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:40:02,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:02,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:40:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1282689847, now seen corresponding path program 2 times [2022-12-13 19:40:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:02,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530107154] [2022-12-13 19:40:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530107154] [2022-12-13 19:40:02,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530107154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226968669] [2022-12-13 19:40:02,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:40:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:02,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:02,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:40:02,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:40:02,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:40:02,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:02,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:02,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226968669] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:02,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:40:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 19:40:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131371965] [2022-12-13 19:40:02,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 19:40:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 19:40:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:40:02,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:40:02,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 115 transitions, 1580 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:02,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:40:02,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:40:02,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:40:05,663 INFO L130 PetriNetUnfolder]: 14457/22088 cut-off events. [2022-12-13 19:40:05,663 INFO L131 PetriNetUnfolder]: For 313145/313145 co-relation queries the response was YES. [2022-12-13 19:40:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132858 conditions, 22088 events. 14457/22088 cut-off events. For 313145/313145 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 148077 event pairs, 655 based on Foata normal form. 727/22815 useless extension candidates. Maximal degree in co-relation 132806. Up to 9426 conditions per place. [2022-12-13 19:40:05,842 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 329 selfloop transitions, 108 changer transitions 0/437 dead transitions. [2022-12-13 19:40:05,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 437 transitions, 5353 flow [2022-12-13 19:40:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 19:40:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 19:40:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2023 transitions. [2022-12-13 19:40:05,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4782505910165485 [2022-12-13 19:40:05,847 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2023 transitions. [2022-12-13 19:40:05,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2023 transitions. [2022-12-13 19:40:05,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:40:05,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2023 transitions. [2022-12-13 19:40:05,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.38888888888889) internal successors, (2023), 18 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:05,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:05,855 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:05,855 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 1580 flow. Second operand 18 states and 2023 transitions. [2022-12-13 19:40:05,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 437 transitions, 5353 flow [2022-12-13 19:40:07,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 437 transitions, 5087 flow, removed 124 selfloop flow, removed 6 redundant places. [2022-12-13 19:40:07,363 INFO L231 Difference]: Finished difference. Result has 124 places, 177 transitions, 2674 flow [2022-12-13 19:40:07,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2674, PETRI_PLACES=124, PETRI_TRANSITIONS=177} [2022-12-13 19:40:07,363 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2022-12-13 19:40:07,363 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 177 transitions, 2674 flow [2022-12-13 19:40:07,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:07,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:40:07,364 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:07,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:40:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:40:07,565 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:40:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1104063780, now seen corresponding path program 1 times [2022-12-13 19:40:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:07,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100797464] [2022-12-13 19:40:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:07,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:07,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100797464] [2022-12-13 19:40:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100797464] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474957626] [2022-12-13 19:40:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:07,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:07,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:07,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:07,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:40:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:07,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:40:07,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:07,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:07,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474957626] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:07,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:40:07,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 19:40:07,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3833266] [2022-12-13 19:40:07,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 19:40:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 19:40:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-12-13 19:40:07,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:40:07,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 177 transitions, 2674 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:07,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:40:07,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:40:07,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:40:12,422 INFO L130 PetriNetUnfolder]: 19869/30502 cut-off events. [2022-12-13 19:40:12,423 INFO L131 PetriNetUnfolder]: For 618169/618169 co-relation queries the response was YES. [2022-12-13 19:40:12,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197462 conditions, 30502 events. 19869/30502 cut-off events. For 618169/618169 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 215934 event pairs, 1292 based on Foata normal form. 994/31496 useless extension candidates. Maximal degree in co-relation 197404. Up to 12100 conditions per place. [2022-12-13 19:40:12,646 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 338 selfloop transitions, 153 changer transitions 0/491 dead transitions. [2022-12-13 19:40:12,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 491 transitions, 6576 flow [2022-12-13 19:40:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:40:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 19:40:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1920 transitions. [2022-12-13 19:40:12,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806007509386733 [2022-12-13 19:40:12,649 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1920 transitions. [2022-12-13 19:40:12,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1920 transitions. [2022-12-13 19:40:12,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:40:12,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1920 transitions. [2022-12-13 19:40:12,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.94117647058823) internal successors, (1920), 17 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:12,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:12,655 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:12,655 INFO L175 Difference]: Start difference. First operand has 124 places, 177 transitions, 2674 flow. Second operand 17 states and 1920 transitions. [2022-12-13 19:40:12,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 491 transitions, 6576 flow [2022-12-13 19:40:16,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 491 transitions, 6359 flow, removed 104 selfloop flow, removed 3 redundant places. [2022-12-13 19:40:16,711 INFO L231 Difference]: Finished difference. Result has 145 places, 239 transitions, 4096 flow [2022-12-13 19:40:16,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4096, PETRI_PLACES=145, PETRI_TRANSITIONS=239} [2022-12-13 19:40:16,712 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2022-12-13 19:40:16,712 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 239 transitions, 4096 flow [2022-12-13 19:40:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:16,712 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:40:16,712 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:16,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:40:16,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:16,913 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:40:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:16,915 INFO L85 PathProgramCache]: Analyzing trace with hash 156401254, now seen corresponding path program 3 times [2022-12-13 19:40:16,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:16,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78265605] [2022-12-13 19:40:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:17,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78265605] [2022-12-13 19:40:17,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78265605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:17,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997358399] [2022-12-13 19:40:17,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:40:17,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:17,021 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:17,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:40:17,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 19:40:17,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:40:17,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:17,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:17,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997358399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:17,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:40:17,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 19:40:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668915667] [2022-12-13 19:40:17,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:17,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:40:17,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:40:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:40:17,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:40:17,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 239 transitions, 4096 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:17,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:40:17,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:40:17,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:40:23,524 INFO L130 PetriNetUnfolder]: 23919/36725 cut-off events. [2022-12-13 19:40:23,524 INFO L131 PetriNetUnfolder]: For 1032887/1032887 co-relation queries the response was YES. [2022-12-13 19:40:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254626 conditions, 36725 events. 23919/36725 cut-off events. For 1032887/1032887 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 264911 event pairs, 1294 based on Foata normal form. 1141/37866 useless extension candidates. Maximal degree in co-relation 254559. Up to 11634 conditions per place. [2022-12-13 19:40:23,881 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 388 selfloop transitions, 237 changer transitions 0/625 dead transitions. [2022-12-13 19:40:23,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 625 transitions, 8961 flow [2022-12-13 19:40:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:40:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 19:40:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-12-13 19:40:23,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806484295845998 [2022-12-13 19:40:23,884 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-12-13 19:40:23,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-12-13 19:40:23,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:40:23,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-12-13 19:40:23,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.95238095238095) internal successors, (2372), 21 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:23,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:23,890 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:23,891 INFO L175 Difference]: Start difference. First operand has 145 places, 239 transitions, 4096 flow. Second operand 21 states and 2372 transitions. [2022-12-13 19:40:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 625 transitions, 8961 flow [2022-12-13 19:40:32,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 625 transitions, 8549 flow, removed 191 selfloop flow, removed 6 redundant places. [2022-12-13 19:40:32,176 INFO L231 Difference]: Finished difference. Result has 168 places, 302 transitions, 5707 flow [2022-12-13 19:40:32,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5707, PETRI_PLACES=168, PETRI_TRANSITIONS=302} [2022-12-13 19:40:32,177 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2022-12-13 19:40:32,177 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 302 transitions, 5707 flow [2022-12-13 19:40:32,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:32,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:40:32,178 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:32,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:40:32,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-12-13 19:40:32,379 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:40:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 13260304, now seen corresponding path program 4 times [2022-12-13 19:40:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:32,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480403528] [2022-12-13 19:40:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:32,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:32,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480403528] [2022-12-13 19:40:32,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480403528] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:32,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092114938] [2022-12-13 19:40:32,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:40:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:32,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:32,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:32,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:40:32,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:40:32,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:32,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:40:32,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:32,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092114938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:32,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:40:32,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 19:40:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909229038] [2022-12-13 19:40:32,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:32,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 19:40:32,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 19:40:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:40:32,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:40:32,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 302 transitions, 5707 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:32,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:40:32,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:40:32,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:40:40,953 INFO L130 PetriNetUnfolder]: 31863/48841 cut-off events. [2022-12-13 19:40:40,953 INFO L131 PetriNetUnfolder]: For 1515546/1515546 co-relation queries the response was YES. [2022-12-13 19:40:41,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355207 conditions, 48841 events. 31863/48841 cut-off events. For 1515546/1515546 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 366535 event pairs, 1435 based on Foata normal form. 1095/49936 useless extension candidates. Maximal degree in co-relation 355132. Up to 17825 conditions per place. [2022-12-13 19:40:41,427 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 521 selfloop transitions, 282 changer transitions 0/803 dead transitions. [2022-12-13 19:40:41,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 803 transitions, 12441 flow [2022-12-13 19:40:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 19:40:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 19:40:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2921 transitions. [2022-12-13 19:40:41,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47806873977086745 [2022-12-13 19:40:41,430 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2921 transitions. [2022-12-13 19:40:41,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2921 transitions. [2022-12-13 19:40:41,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:40:41,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2921 transitions. [2022-12-13 19:40:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.34615384615384) internal successors, (2921), 26 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:41,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:41,439 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:41,439 INFO L175 Difference]: Start difference. First operand has 168 places, 302 transitions, 5707 flow. Second operand 26 states and 2921 transitions. [2022-12-13 19:40:41,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 803 transitions, 12441 flow [2022-12-13 19:40:56,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 803 transitions, 11977 flow, removed 215 selfloop flow, removed 6 redundant places. [2022-12-13 19:40:56,058 INFO L231 Difference]: Finished difference. Result has 197 places, 405 transitions, 8186 flow [2022-12-13 19:40:56,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8186, PETRI_PLACES=197, PETRI_TRANSITIONS=405} [2022-12-13 19:40:56,058 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2022-12-13 19:40:56,059 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 405 transitions, 8186 flow [2022-12-13 19:40:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:56,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:40:56,059 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:56,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 19:40:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:56,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:40:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash 415693629, now seen corresponding path program 5 times [2022-12-13 19:40:56,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:56,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86269692] [2022-12-13 19:40:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:56,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:56,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86269692] [2022-12-13 19:40:56,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86269692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:56,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164686450] [2022-12-13 19:40:56,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:40:56,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:56,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:56,338 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:56,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:40:56,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 19:40:56,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:56,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:40:56,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:56,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:40:56,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164686450] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:56,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:40:56,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:40:56,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503695954] [2022-12-13 19:40:56,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:40:56,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:40:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:40:56,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:40:56,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 405 transitions, 8186 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:40:56,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:40:56,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:40:56,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:41:10,355 INFO L130 PetriNetUnfolder]: 42973/66222 cut-off events. [2022-12-13 19:41:10,355 INFO L131 PetriNetUnfolder]: For 2951756/2951756 co-relation queries the response was YES. [2022-12-13 19:41:10,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507088 conditions, 66222 events. 42973/66222 cut-off events. For 2951756/2951756 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 519186 event pairs, 3505 based on Foata normal form. 1561/67783 useless extension candidates. Maximal degree in co-relation 507003. Up to 29394 conditions per place. [2022-12-13 19:41:11,136 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 682 selfloop transitions, 360 changer transitions 0/1042 dead transitions. [2022-12-13 19:41:11,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1042 transitions, 17366 flow [2022-12-13 19:41:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 19:41:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-13 19:41:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3382 transitions. [2022-12-13 19:41:11,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4797163120567376 [2022-12-13 19:41:11,140 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3382 transitions. [2022-12-13 19:41:11,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3382 transitions. [2022-12-13 19:41:11,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:41:11,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3382 transitions. [2022-12-13 19:41:11,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.73333333333333) internal successors, (3382), 30 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:11,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 235.0) internal successors, (7285), 31 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:11,149 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 235.0) internal successors, (7285), 31 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:11,149 INFO L175 Difference]: Start difference. First operand has 197 places, 405 transitions, 8186 flow. Second operand 30 states and 3382 transitions. [2022-12-13 19:41:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1042 transitions, 17366 flow [2022-12-13 19:41:46,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1042 transitions, 16760 flow, removed 288 selfloop flow, removed 6 redundant places. [2022-12-13 19:41:46,990 INFO L231 Difference]: Finished difference. Result has 230 places, 563 transitions, 12198 flow [2022-12-13 19:41:46,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7808, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12198, PETRI_PLACES=230, PETRI_TRANSITIONS=563} [2022-12-13 19:41:46,991 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2022-12-13 19:41:46,991 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 563 transitions, 12198 flow [2022-12-13 19:41:46,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:46,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:41:46,991 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:46,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:47,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:47,192 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:41:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 143813186, now seen corresponding path program 6 times [2022-12-13 19:41:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003399660] [2022-12-13 19:41:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:47,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003399660] [2022-12-13 19:41:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003399660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718805090] [2022-12-13 19:41:47,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 19:41:47,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:47,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:47,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:47,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:41:47,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 19:41:47,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:41:47,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:41:47,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:47,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:47,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718805090] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:47,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:41:47,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:41:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651029504] [2022-12-13 19:41:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:41:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:41:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:41:47,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:41:47,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 563 transitions, 12198 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:47,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:41:47,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:41:47,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:42:05,245 INFO L130 PetriNetUnfolder]: 49487/76251 cut-off events. [2022-12-13 19:42:05,245 INFO L131 PetriNetUnfolder]: For 3970120/3970120 co-relation queries the response was YES. [2022-12-13 19:42:05,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621059 conditions, 76251 events. 49487/76251 cut-off events. For 3970120/3970120 co-relation queries the response was YES. Maximal size of possible extension queue 2339. Compared 609463 event pairs, 4023 based on Foata normal form. 1293/77544 useless extension candidates. Maximal degree in co-relation 620963. Up to 33937 conditions per place. [2022-12-13 19:42:06,360 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 616 selfloop transitions, 394 changer transitions 0/1010 dead transitions. [2022-12-13 19:42:06,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1010 transitions, 19006 flow [2022-12-13 19:42:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 19:42:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 19:42:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2597 transitions. [2022-12-13 19:42:06,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4804810360777058 [2022-12-13 19:42:06,364 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2597 transitions. [2022-12-13 19:42:06,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2597 transitions. [2022-12-13 19:42:06,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:42:06,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2597 transitions. [2022-12-13 19:42:06,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.91304347826087) internal successors, (2597), 23 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:42:06,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 235.0) internal successors, (5640), 24 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:42:06,370 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 235.0) internal successors, (5640), 24 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:42:06,371 INFO L175 Difference]: Start difference. First operand has 230 places, 563 transitions, 12198 flow. Second operand 23 states and 2597 transitions. [2022-12-13 19:42:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1010 transitions, 19006 flow [2022-12-13 19:43:06,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1010 transitions, 18493 flow, removed 220 selfloop flow, removed 11 redundant places. [2022-12-13 19:43:06,346 INFO L231 Difference]: Finished difference. Result has 251 places, 643 transitions, 14902 flow [2022-12-13 19:43:06,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=11781, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14902, PETRI_PLACES=251, PETRI_TRANSITIONS=643} [2022-12-13 19:43:06,347 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2022-12-13 19:43:06,347 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 643 transitions, 14902 flow [2022-12-13 19:43:06,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:43:06,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:43:06,347 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:43:06,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 19:43:06,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 19:43:06,549 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:43:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash 286953978, now seen corresponding path program 2 times [2022-12-13 19:43:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:06,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768750813] [2022-12-13 19:43:06,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:06,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:43:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:43:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768750813] [2022-12-13 19:43:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768750813] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:43:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17315398] [2022-12-13 19:43:06,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:43:06,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:43:06,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:43:06,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 19:43:06,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:43:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:43:06,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:43:06,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:43:06,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:43:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:43:06,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17315398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:43:06,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:43:06,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 19:43:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465644847] [2022-12-13 19:43:06,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:43:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:43:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:06,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:43:06,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:43:06,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:43:06,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 643 transitions, 14902 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:43:06,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:43:06,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:43:06,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:43:32,278 INFO L130 PetriNetUnfolder]: 64685/99692 cut-off events. [2022-12-13 19:43:32,278 INFO L131 PetriNetUnfolder]: For 5701185/5701185 co-relation queries the response was YES. [2022-12-13 19:43:33,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840758 conditions, 99692 events. 64685/99692 cut-off events. For 5701185/5701185 co-relation queries the response was YES. Maximal size of possible extension queue 3137. Compared 825426 event pairs, 5127 based on Foata normal form. 1302/100994 useless extension candidates. Maximal degree in co-relation 840651. Up to 39482 conditions per place. [2022-12-13 19:43:34,025 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 746 selfloop transitions, 571 changer transitions 0/1317 dead transitions. [2022-12-13 19:43:34,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1317 transitions, 26146 flow [2022-12-13 19:43:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 19:43:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 19:43:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3254 transitions. [2022-12-13 19:43:34,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47747615553925166 [2022-12-13 19:43:34,030 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3254 transitions. [2022-12-13 19:43:34,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3254 transitions. [2022-12-13 19:43:34,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:43:34,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3254 transitions. [2022-12-13 19:43:34,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 112.20689655172414) internal successors, (3254), 29 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:43:34,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:43:34,043 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:43:34,044 INFO L175 Difference]: Start difference. First operand has 251 places, 643 transitions, 14902 flow. Second operand 29 states and 3254 transitions. [2022-12-13 19:43:34,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1317 transitions, 26146 flow [2022-12-13 19:45:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1317 transitions, 25418 flow, removed 347 selfloop flow, removed 6 redundant places. [2022-12-13 19:45:22,966 INFO L231 Difference]: Finished difference. Result has 283 places, 853 transitions, 20860 flow [2022-12-13 19:45:22,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=14460, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20860, PETRI_PLACES=283, PETRI_TRANSITIONS=853} [2022-12-13 19:45:22,967 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 254 predicate places. [2022-12-13 19:45:22,967 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 853 transitions, 20860 flow [2022-12-13 19:45:22,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:22,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:45:22,967 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:45:22,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 19:45:23,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 19:45:23,168 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:45:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:45:23,170 INFO L85 PathProgramCache]: Analyzing trace with hash 120947969, now seen corresponding path program 7 times [2022-12-13 19:45:23,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:45:23,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714023399] [2022-12-13 19:45:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:45:23,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:45:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:45:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:45:23,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714023399] [2022-12-13 19:45:23,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714023399] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:45:23,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756033670] [2022-12-13 19:45:23,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 19:45:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:45:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:45:23,296 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:45:23,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 19:45:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:45:23,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:45:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:45:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:45:23,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:45:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:45:23,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756033670] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:45:23,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:45:23,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 19:45:23,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169750270] [2022-12-13 19:45:23,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:45:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 19:45:23,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:45:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 19:45:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:45:23,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:45:23,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 853 transitions, 20860 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:23,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:45:23,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:45:23,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:45:57,452 INFO L130 PetriNetUnfolder]: 72611/111864 cut-off events. [2022-12-13 19:45:57,452 INFO L131 PetriNetUnfolder]: For 7624873/7624873 co-relation queries the response was YES. [2022-12-13 19:45:58,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986097 conditions, 111864 events. 72611/111864 cut-off events. For 7624873/7624873 co-relation queries the response was YES. Maximal size of possible extension queue 3495. Compared 936175 event pairs, 6924 based on Foata normal form. 1348/113212 useless extension candidates. Maximal degree in co-relation 985979. Up to 48544 conditions per place. [2022-12-13 19:45:59,417 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 768 selfloop transitions, 614 changer transitions 0/1382 dead transitions. [2022-12-13 19:45:59,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1382 transitions, 29651 flow [2022-12-13 19:45:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 19:45:59,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 19:45:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2938 transitions. [2022-12-13 19:45:59,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 19:45:59,422 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2938 transitions. [2022-12-13 19:45:59,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2938 transitions. [2022-12-13 19:45:59,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:45:59,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2938 transitions. [2022-12-13 19:45:59,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 113.0) internal successors, (2938), 26 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:59,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:59,435 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:45:59,435 INFO L175 Difference]: Start difference. First operand has 283 places, 853 transitions, 20860 flow. Second operand 26 states and 2938 transitions. [2022-12-13 19:45:59,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1382 transitions, 29651 flow [2022-12-13 19:48:45,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1382 transitions, 28842 flow, removed 367 selfloop flow, removed 9 redundant places. [2022-12-13 19:48:45,572 INFO L231 Difference]: Finished difference. Result has 310 places, 960 transitions, 24742 flow [2022-12-13 19:48:45,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=20115, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=529, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=24742, PETRI_PLACES=310, PETRI_TRANSITIONS=960} [2022-12-13 19:48:45,573 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 281 predicate places. [2022-12-13 19:48:45,573 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 960 transitions, 24742 flow [2022-12-13 19:48:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:45,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:48:45,574 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:48:45,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 19:48:45,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 19:48:45,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 19:48:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash -17580029, now seen corresponding path program 3 times [2022-12-13 19:48:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:45,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249425429] [2022-12-13 19:48:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:45,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:45,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249425429] [2022-12-13 19:48:45,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249425429] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:48:45,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359503902] [2022-12-13 19:48:45,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:48:45,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:45,906 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:45,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5602f86-b417-42ad-9e14-c6480de99606/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 19:48:45,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 19:48:45,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:48:45,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:48:45,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:46,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:48:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:46,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359503902] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:48:46,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:48:46,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 19:48:46,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611571913] [2022-12-13 19:48:46,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:48:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 19:48:46,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 19:48:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2022-12-13 19:48:46,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 19:48:46,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 960 transitions, 24742 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:46,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:48:46,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 19:48:46,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:49:37,290 INFO L130 PetriNetUnfolder]: 94869/146389 cut-off events. [2022-12-13 19:49:37,290 INFO L131 PetriNetUnfolder]: For 11383039/11383039 co-relation queries the response was YES. [2022-12-13 19:49:39,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333850 conditions, 146389 events. 94869/146389 cut-off events. For 11383039/11383039 co-relation queries the response was YES. Maximal size of possible extension queue 4684. Compared 1263769 event pairs, 5225 based on Foata normal form. 1647/148036 useless extension candidates. Maximal degree in co-relation 1333720. Up to 49570 conditions per place. [2022-12-13 19:49:40,085 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 831 selfloop transitions, 1014 changer transitions 0/1845 dead transitions. [2022-12-13 19:49:40,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1845 transitions, 41325 flow [2022-12-13 19:49:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 19:49:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 19:49:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3823 transitions. [2022-12-13 19:49:40,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47847309136420524 [2022-12-13 19:49:40,090 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3823 transitions. [2022-12-13 19:49:40,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3823 transitions. [2022-12-13 19:49:40,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:49:40,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3823 transitions. [2022-12-13 19:49:40,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 112.44117647058823) internal successors, (3823), 34 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:40,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 235.0) internal successors, (8225), 35 states have internal predecessors, (8225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:40,100 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 235.0) internal successors, (8225), 35 states have internal predecessors, (8225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:40,100 INFO L175 Difference]: Start difference. First operand has 310 places, 960 transitions, 24742 flow. Second operand 34 states and 3823 transitions. [2022-12-13 19:49:40,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1845 transitions, 41325 flow