./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:53:56,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:53:56,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:53:56,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:53:56,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:53:56,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:53:56,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:53:56,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:53:56,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:53:56,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:53:56,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:53:56,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:53:56,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:53:56,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:53:56,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:53:56,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:53:56,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:53:56,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:53:56,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:53:56,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:53:56,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:53:56,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:53:56,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:53:56,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:53:56,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:53:56,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:53:56,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:53:56,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:53:56,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:53:56,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:53:56,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:53:56,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:53:56,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:53:56,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:53:56,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:53:56,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:53:56,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:53:56,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:53:56,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:53:56,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:53:56,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:53:56,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:53:56,333 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:53:56,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:53:56,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:53:56,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:53:56,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:53:56,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:53:56,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:53:56,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:53:56,338 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:53:56,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:53:56,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:53:56,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:53:56,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:53:56,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:53:56,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:53:56,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:53:56,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:53:56,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:53:56,341 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:53:56,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:53:56,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:53:56,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:53:56,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:53:56,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:53:56,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:53:56,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:53:56,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:56,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:53:56,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:53:56,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:53:56,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:53:56,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:53:56,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:53:56,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:53:56,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:53:56,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-11-16 10:53:56,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:53:56,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:53:56,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:53:56,668 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:53:56,669 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:53:56,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-16 10:53:56,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/data/7718c5fbf/44a8d4d335a343888b6aeacc82656d5a/FLAGa01018f4e [2022-11-16 10:53:57,234 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:53:57,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-16 10:53:57,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/data/7718c5fbf/44a8d4d335a343888b6aeacc82656d5a/FLAGa01018f4e [2022-11-16 10:53:57,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/data/7718c5fbf/44a8d4d335a343888b6aeacc82656d5a [2022-11-16 10:53:57,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:53:57,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:53:57,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:57,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:53:57,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:53:57,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65aa22ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57, skipping insertion in model container [2022-11-16 10:53:57,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:53:57,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:53:57,894 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-16 10:53:57,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:57,909 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:53:57,946 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-16 10:53:57,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:57,985 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:53:57,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57 WrapperNode [2022-11-16 10:53:57,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:57,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:57,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:53:57,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:53:57,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,077 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 239 [2022-11-16 10:53:58,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:58,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:53:58,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:53:58,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:53:58,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,106 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:53:58,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:53:58,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:53:58,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:53:58,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:53:58,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:53:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:53:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:53:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:53:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:53:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:53:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:53:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 10:53:58,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 10:53:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:53:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:53:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:53:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:53:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:53:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:53:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:53:58,213 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:53:58,388 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:53:58,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:53:58,942 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:53:58,956 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:53:58,957 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:53:58,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58 BoogieIcfgContainer [2022-11-16 10:53:58,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:53:58,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:53:58,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:53:58,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:53:58,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:57" (1/3) ... [2022-11-16 10:53:58,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a232daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2022-11-16 10:53:58,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (2/3) ... [2022-11-16 10:53:58,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a232daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2022-11-16 10:53:58,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58" (3/3) ... [2022-11-16 10:53:58,974 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-11-16 10:53:58,985 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:53:59,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:53:59,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 10:53:59,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:53:59,237 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 10:53:59,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 321 transitions, 666 flow [2022-11-16 10:53:59,549 INFO L130 PetriNetUnfolder]: 26/318 cut-off events. [2022-11-16 10:53:59,549 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 10:53:59,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 26/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 878 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2022-11-16 10:53:59,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 321 transitions, 666 flow [2022-11-16 10:53:59,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 289 transitions, 593 flow [2022-11-16 10:53:59,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:53:59,592 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;@fd34c0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:53:59,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 10:53:59,617 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-11-16 10:53:59,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:53:59,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:53:59,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:53:59,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:53:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:53:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1491451842, now seen corresponding path program 1 times [2022-11-16 10:53:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:53:59,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133039830] [2022-11-16 10:53:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:53:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:53:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:00,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:00,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133039830] [2022-11-16 10:54:00,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133039830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:00,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:00,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948398857] [2022-11-16 10:54:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:00,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:00,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:00,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:00,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:00,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:00,706 INFO L130 PetriNetUnfolder]: 78/534 cut-off events. [2022-11-16 10:54:00,706 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-16 10:54:00,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 534 events. 78/534 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2738 event pairs, 2 based on Foata normal form. 119/585 useless extension candidates. Maximal degree in co-relation 656. Up to 119 conditions per place. [2022-11-16 10:54:00,721 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 33 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-16 10:54:00,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 290 transitions, 689 flow [2022-11-16 10:54:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1733 transitions. [2022-11-16 10:54:00,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8997923156801662 [2022-11-16 10:54:00,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1733 transitions. [2022-11-16 10:54:00,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1733 transitions. [2022-11-16 10:54:00,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:00,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1733 transitions. [2022-11-16 10:54:00,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 6 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,782 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,785 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 593 flow. Second operand 6 states and 1733 transitions. [2022-11-16 10:54:00,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 290 transitions, 689 flow [2022-11-16 10:54:00,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 290 transitions, 670 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:00,803 INFO L231 Difference]: Finished difference. Result has 274 places, 282 transitions, 580 flow [2022-11-16 10:54:00,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=274, PETRI_TRANSITIONS=282} [2022-11-16 10:54:00,809 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, -1 predicate places. [2022-11-16 10:54:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 282 transitions, 580 flow [2022-11-16 10:54:00,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:00,812 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:00,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:00,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1009632342, now seen corresponding path program 1 times [2022-11-16 10:54:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:00,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646889379] [2022-11-16 10:54:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646889379] [2022-11-16 10:54:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646889379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:01,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:01,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384900208] [2022-11-16 10:54:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:01,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:01,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:01,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:01,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 282 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:01,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:01,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:01,350 INFO L130 PetriNetUnfolder]: 101/880 cut-off events. [2022-11-16 10:54:01,350 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-16 10:54:01,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 880 events. 101/880 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5705 event pairs, 24 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 712. Up to 71 conditions per place. [2022-11-16 10:54:01,366 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 37 selfloop transitions, 4 changer transitions 0/296 dead transitions. [2022-11-16 10:54:01,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 296 transitions, 698 flow [2022-11-16 10:54:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1175 transitions. [2022-11-16 10:54:01,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9151090342679128 [2022-11-16 10:54:01,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1175 transitions. [2022-11-16 10:54:01,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1175 transitions. [2022-11-16 10:54:01,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:01,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1175 transitions. [2022-11-16 10:54:01,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.75) internal successors, (1175), 4 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) [2022-11-16 10:54:01,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,399 INFO L175 Difference]: Start difference. First operand has 274 places, 282 transitions, 580 flow. Second operand 4 states and 1175 transitions. [2022-11-16 10:54:01,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 296 transitions, 698 flow [2022-11-16 10:54:01,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 296 transitions, 689 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:01,407 INFO L231 Difference]: Finished difference. Result has 275 places, 283 transitions, 595 flow [2022-11-16 10:54:01,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=275, PETRI_TRANSITIONS=283} [2022-11-16 10:54:01,408 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 0 predicate places. [2022-11-16 10:54:01,408 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 283 transitions, 595 flow [2022-11-16 10:54:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:01,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:01,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1879201343, now seen corresponding path program 1 times [2022-11-16 10:54:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:01,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289315838] [2022-11-16 10:54:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289315838] [2022-11-16 10:54:01,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289315838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:01,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:01,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411535395] [2022-11-16 10:54:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:01,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:01,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:01,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 283 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:01,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:01,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:02,068 INFO L130 PetriNetUnfolder]: 236/1250 cut-off events. [2022-11-16 10:54:02,068 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-11-16 10:54:02,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1250 events. 236/1250 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9176 event pairs, 6 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 1475. Up to 327 conditions per place. [2022-11-16 10:54:02,093 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-16 10:54:02,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 289 transitions, 688 flow [2022-11-16 10:54:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1718 transitions. [2022-11-16 10:54:02,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8920041536863966 [2022-11-16 10:54:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1718 transitions. [2022-11-16 10:54:02,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1718 transitions. [2022-11-16 10:54:02,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:02,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1718 transitions. [2022-11-16 10:54:02,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.3333333333333) internal successors, (1718), 6 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,109 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,109 INFO L175 Difference]: Start difference. First operand has 275 places, 283 transitions, 595 flow. Second operand 6 states and 1718 transitions. [2022-11-16 10:54:02,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 289 transitions, 688 flow [2022-11-16 10:54:02,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:02,115 INFO L231 Difference]: Finished difference. Result has 279 places, 282 transitions, 603 flow [2022-11-16 10:54:02,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=279, PETRI_TRANSITIONS=282} [2022-11-16 10:54:02,118 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 4 predicate places. [2022-11-16 10:54:02,119 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 282 transitions, 603 flow [2022-11-16 10:54:02,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:02,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:02,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:54:02,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:02,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1874299627, now seen corresponding path program 1 times [2022-11-16 10:54:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:02,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700108127] [2022-11-16 10:54:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:02,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700108127] [2022-11-16 10:54:02,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700108127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:02,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:02,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:02,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790130536] [2022-11-16 10:54:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:02,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:02,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:02,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 282 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:02,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:02,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:02,749 INFO L130 PetriNetUnfolder]: 148/1049 cut-off events. [2022-11-16 10:54:02,749 INFO L131 PetriNetUnfolder]: For 104/398 co-relation queries the response was YES. [2022-11-16 10:54:02,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1049 events. 148/1049 cut-off events. For 104/398 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7596 event pairs, 48 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 1152. Up to 126 conditions per place. [2022-11-16 10:54:02,777 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 36 selfloop transitions, 4 changer transitions 0/295 dead transitions. [2022-11-16 10:54:02,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 295 transitions, 716 flow [2022-11-16 10:54:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1174 transitions. [2022-11-16 10:54:02,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143302180685359 [2022-11-16 10:54:02,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1174 transitions. [2022-11-16 10:54:02,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1174 transitions. [2022-11-16 10:54:02,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:02,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1174 transitions. [2022-11-16 10:54:02,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,794 INFO L175 Difference]: Start difference. First operand has 279 places, 282 transitions, 603 flow. Second operand 4 states and 1174 transitions. [2022-11-16 10:54:02,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 295 transitions, 716 flow [2022-11-16 10:54:02,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 295 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:02,801 INFO L231 Difference]: Finished difference. Result has 280 places, 283 transitions, 618 flow [2022-11-16 10:54:02,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=280, PETRI_TRANSITIONS=283} [2022-11-16 10:54:02,806 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 5 predicate places. [2022-11-16 10:54:02,806 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 283 transitions, 618 flow [2022-11-16 10:54:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:02,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:54:02,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1453873425, now seen corresponding path program 1 times [2022-11-16 10:54:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:02,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217560615] [2022-11-16 10:54:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:02,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:02,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:02,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217560615] [2022-11-16 10:54:02,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217560615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:02,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395795729] [2022-11-16 10:54:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:02,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:02,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 283 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:02,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:02,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:03,323 INFO L130 PetriNetUnfolder]: 95/1042 cut-off events. [2022-11-16 10:54:03,324 INFO L131 PetriNetUnfolder]: For 55/114 co-relation queries the response was YES. [2022-11-16 10:54:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 1042 events. 95/1042 cut-off events. For 55/114 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7159 event pairs, 24 based on Foata normal form. 5/915 useless extension candidates. Maximal degree in co-relation 1174. Up to 72 conditions per place. [2022-11-16 10:54:03,345 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 37 selfloop transitions, 3 changer transitions 0/295 dead transitions. [2022-11-16 10:54:03,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 295 transitions, 726 flow [2022-11-16 10:54:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-11-16 10:54:03,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9135514018691588 [2022-11-16 10:54:03,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-11-16 10:54:03,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-11-16 10:54:03,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:03,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-11-16 10:54:03,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,356 INFO L175 Difference]: Start difference. First operand has 280 places, 283 transitions, 618 flow. Second operand 4 states and 1173 transitions. [2022-11-16 10:54:03,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 295 transitions, 726 flow [2022-11-16 10:54:03,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:03,362 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 616 flow [2022-11-16 10:54:03,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-16 10:54:03,364 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-16 10:54:03,364 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 616 flow [2022-11-16 10:54:03,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:03,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:03,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2120404044, now seen corresponding path program 1 times [2022-11-16 10:54:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:03,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248751568] [2022-11-16 10:54:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:03,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248751568] [2022-11-16 10:54:03,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248751568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:03,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:03,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141032489] [2022-11-16 10:54:03,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:03,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:03,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:03,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:03,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:03,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:03,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:03,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:03,838 INFO L130 PetriNetUnfolder]: 96/802 cut-off events. [2022-11-16 10:54:03,838 INFO L131 PetriNetUnfolder]: For 43/323 co-relation queries the response was YES. [2022-11-16 10:54:03,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 802 events. 96/802 cut-off events. For 43/323 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5032 event pairs, 4 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 1049. Up to 168 conditions per place. [2022-11-16 10:54:03,864 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-16 10:54:03,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 289 transitions, 710 flow [2022-11-16 10:54:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1717 transitions. [2022-11-16 10:54:03,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891484942886812 [2022-11-16 10:54:03,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1717 transitions. [2022-11-16 10:54:03,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1717 transitions. [2022-11-16 10:54:03,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:03,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1717 transitions. [2022-11-16 10:54:03,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,878 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,878 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 616 flow. Second operand 6 states and 1717 transitions. [2022-11-16 10:54:03,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 289 transitions, 710 flow [2022-11-16 10:54:03,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 289 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:03,887 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 619 flow [2022-11-16 10:54:03,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-16 10:54:03,890 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-16 10:54:03,890 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 619 flow [2022-11-16 10:54:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:03,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:03,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:54:03,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1525824497, now seen corresponding path program 1 times [2022-11-16 10:54:03,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:03,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499047802] [2022-11-16 10:54:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:03,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:03,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499047802] [2022-11-16 10:54:03,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499047802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:03,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:03,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:03,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520601254] [2022-11-16 10:54:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:03,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:03,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:03,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:03,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:03,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:04,365 INFO L130 PetriNetUnfolder]: 108/1148 cut-off events. [2022-11-16 10:54:04,366 INFO L131 PetriNetUnfolder]: For 33/109 co-relation queries the response was YES. [2022-11-16 10:54:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 1148 events. 108/1148 cut-off events. For 33/109 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8393 event pairs, 36 based on Foata normal form. 5/1014 useless extension candidates. Maximal degree in co-relation 1345. Up to 106 conditions per place. [2022-11-16 10:54:04,390 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 34 selfloop transitions, 3 changer transitions 0/293 dead transitions. [2022-11-16 10:54:04,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 293 transitions, 723 flow [2022-11-16 10:54:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1170 transitions. [2022-11-16 10:54:04,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9112149532710281 [2022-11-16 10:54:04,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1170 transitions. [2022-11-16 10:54:04,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1170 transitions. [2022-11-16 10:54:04,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:04,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1170 transitions. [2022-11-16 10:54:04,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,402 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 619 flow. Second operand 4 states and 1170 transitions. [2022-11-16 10:54:04,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 293 transitions, 723 flow [2022-11-16 10:54:04,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 293 transitions, 712 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:04,410 INFO L231 Difference]: Finished difference. Result has 282 places, 281 transitions, 617 flow [2022-11-16 10:54:04,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=282, PETRI_TRANSITIONS=281} [2022-11-16 10:54:04,412 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-16 10:54:04,412 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 281 transitions, 617 flow [2022-11-16 10:54:04,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:04,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:54:04,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash 359271466, now seen corresponding path program 1 times [2022-11-16 10:54:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:04,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936872679] [2022-11-16 10:54:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:04,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936872679] [2022-11-16 10:54:04,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936872679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:04,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:04,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721060516] [2022-11-16 10:54:04,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:04,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:04,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:04,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 281 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:04,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:05,227 INFO L130 PetriNetUnfolder]: 488/2104 cut-off events. [2022-11-16 10:54:05,228 INFO L131 PetriNetUnfolder]: For 365/522 co-relation queries the response was YES. [2022-11-16 10:54:05,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 2104 events. 488/2104 cut-off events. For 365/522 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19277 event pairs, 5 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 2512. Up to 749 conditions per place. [2022-11-16 10:54:05,257 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-16 10:54:05,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 286 transitions, 703 flow [2022-11-16 10:54:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1717 transitions. [2022-11-16 10:54:05,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891484942886812 [2022-11-16 10:54:05,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1717 transitions. [2022-11-16 10:54:05,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1717 transitions. [2022-11-16 10:54:05,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:05,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1717 transitions. [2022-11-16 10:54:05,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,275 INFO L175 Difference]: Start difference. First operand has 282 places, 281 transitions, 617 flow. Second operand 6 states and 1717 transitions. [2022-11-16 10:54:05,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 286 transitions, 703 flow [2022-11-16 10:54:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 286 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:05,283 INFO L231 Difference]: Finished difference. Result has 285 places, 280 transitions, 623 flow [2022-11-16 10:54:05,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=285, PETRI_TRANSITIONS=280} [2022-11-16 10:54:05,284 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 10 predicate places. [2022-11-16 10:54:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 280 transitions, 623 flow [2022-11-16 10:54:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:05,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:05,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:54:05,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:05,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1747485486, now seen corresponding path program 1 times [2022-11-16 10:54:05,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:05,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319859079] [2022-11-16 10:54:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319859079] [2022-11-16 10:54:05,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319859079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:05,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:05,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437861333] [2022-11-16 10:54:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:05,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:05,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:05,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:05,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 280 transitions, 623 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:05,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:05,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:06,152 INFO L130 PetriNetUnfolder]: 493/2445 cut-off events. [2022-11-16 10:54:06,152 INFO L131 PetriNetUnfolder]: For 484/750 co-relation queries the response was YES. [2022-11-16 10:54:06,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 2445 events. 493/2445 cut-off events. For 484/750 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24391 event pairs, 192 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3403. Up to 446 conditions per place. [2022-11-16 10:54:06,186 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 35 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-16 10:54:06,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 292 transitions, 729 flow [2022-11-16 10:54:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-11-16 10:54:06,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9135514018691588 [2022-11-16 10:54:06,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-11-16 10:54:06,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-11-16 10:54:06,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:06,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-11-16 10:54:06,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,197 INFO L175 Difference]: Start difference. First operand has 285 places, 280 transitions, 623 flow. Second operand 4 states and 1173 transitions. [2022-11-16 10:54:06,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 292 transitions, 729 flow [2022-11-16 10:54:06,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 292 transitions, 720 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:06,203 INFO L231 Difference]: Finished difference. Result has 286 places, 281 transitions, 638 flow [2022-11-16 10:54:06,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2022-11-16 10:54:06,205 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 11 predicate places. [2022-11-16 10:54:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 638 flow [2022-11-16 10:54:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:06,206 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:06,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:54:06,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 427465596, now seen corresponding path program 1 times [2022-11-16 10:54:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:06,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497309363] [2022-11-16 10:54:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:06,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:06,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497309363] [2022-11-16 10:54:06,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497309363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:06,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:06,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981119034] [2022-11-16 10:54:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:06,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:06,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:06,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:06,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:06,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:06,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:06,835 INFO L130 PetriNetUnfolder]: 167/1351 cut-off events. [2022-11-16 10:54:06,835 INFO L131 PetriNetUnfolder]: For 207/649 co-relation queries the response was YES. [2022-11-16 10:54:06,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1351 events. 167/1351 cut-off events. For 207/649 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10727 event pairs, 60 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1690. Up to 148 conditions per place. [2022-11-16 10:54:06,882 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 36 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-16 10:54:06,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 292 transitions, 741 flow [2022-11-16 10:54:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2022-11-16 10:54:06,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9127725856697819 [2022-11-16 10:54:06,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2022-11-16 10:54:06,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2022-11-16 10:54:06,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:06,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2022-11-16 10:54:06,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,893 INFO L175 Difference]: Start difference. First operand has 286 places, 281 transitions, 638 flow. Second operand 4 states and 1172 transitions. [2022-11-16 10:54:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 292 transitions, 741 flow [2022-11-16 10:54:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 292 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:06,900 INFO L231 Difference]: Finished difference. Result has 288 places, 280 transitions, 636 flow [2022-11-16 10:54:06,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=636, PETRI_PLACES=288, PETRI_TRANSITIONS=280} [2022-11-16 10:54:06,901 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 13 predicate places. [2022-11-16 10:54:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 280 transitions, 636 flow [2022-11-16 10:54:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:06,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:54:06,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1035295951, now seen corresponding path program 1 times [2022-11-16 10:54:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:06,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904184972] [2022-11-16 10:54:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:07,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904184972] [2022-11-16 10:54:07,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904184972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:07,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:07,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580696635] [2022-11-16 10:54:07,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:07,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:07,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:07,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 280 transitions, 636 flow. Second operand has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:07,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:07,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:07,559 INFO L130 PetriNetUnfolder]: 202/1286 cut-off events. [2022-11-16 10:54:07,559 INFO L131 PetriNetUnfolder]: For 53/201 co-relation queries the response was YES. [2022-11-16 10:54:07,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 1286 events. 202/1286 cut-off events. For 53/201 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9670 event pairs, 2 based on Foata normal form. 8/1197 useless extension candidates. Maximal degree in co-relation 1923. Up to 198 conditions per place. [2022-11-16 10:54:07,591 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 40 selfloop transitions, 9 changer transitions 0/296 dead transitions. [2022-11-16 10:54:07,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 296 transitions, 780 flow [2022-11-16 10:54:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2250 transitions. [2022-11-16 10:54:07,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761682242990654 [2022-11-16 10:54:07,601 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2250 transitions. [2022-11-16 10:54:07,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2250 transitions. [2022-11-16 10:54:07,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:07,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2250 transitions. [2022-11-16 10:54:07,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.25) internal successors, (2250), 8 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,613 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,613 INFO L175 Difference]: Start difference. First operand has 288 places, 280 transitions, 636 flow. Second operand 8 states and 2250 transitions. [2022-11-16 10:54:07,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 296 transitions, 780 flow [2022-11-16 10:54:07,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 296 transitions, 775 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:07,620 INFO L231 Difference]: Finished difference. Result has 295 places, 281 transitions, 661 flow [2022-11-16 10:54:07,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=295, PETRI_TRANSITIONS=281} [2022-11-16 10:54:07,621 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-16 10:54:07,621 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 281 transitions, 661 flow [2022-11-16 10:54:07,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:07,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:07,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 10:54:07,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash 366532489, now seen corresponding path program 1 times [2022-11-16 10:54:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:07,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588459975] [2022-11-16 10:54:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:07,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:07,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588459975] [2022-11-16 10:54:07,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588459975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:07,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:07,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913719957] [2022-11-16 10:54:07,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:07,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:07,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:07,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 281 transitions, 661 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:07,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:08,632 INFO L130 PetriNetUnfolder]: 358/2347 cut-off events. [2022-11-16 10:54:08,633 INFO L131 PetriNetUnfolder]: For 268/340 co-relation queries the response was YES. [2022-11-16 10:54:08,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 2347 events. 358/2347 cut-off events. For 268/340 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21325 event pairs, 8 based on Foata normal form. 0/2011 useless extension candidates. Maximal degree in co-relation 2949. Up to 535 conditions per place. [2022-11-16 10:54:08,690 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 30 selfloop transitions, 5 changer transitions 0/287 dead transitions. [2022-11-16 10:54:08,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 287 transitions, 750 flow [2022-11-16 10:54:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:08,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1716 transitions. [2022-11-16 10:54:08,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909657320872274 [2022-11-16 10:54:08,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1716 transitions. [2022-11-16 10:54:08,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1716 transitions. [2022-11-16 10:54:08,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:08,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1716 transitions. [2022-11-16 10:54:08,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,705 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,705 INFO L175 Difference]: Start difference. First operand has 295 places, 281 transitions, 661 flow. Second operand 6 states and 1716 transitions. [2022-11-16 10:54:08,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 287 transitions, 750 flow [2022-11-16 10:54:08,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 741 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:08,712 INFO L231 Difference]: Finished difference. Result has 295 places, 280 transitions, 660 flow [2022-11-16 10:54:08,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=295, PETRI_TRANSITIONS=280} [2022-11-16 10:54:08,714 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-16 10:54:08,714 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 280 transitions, 660 flow [2022-11-16 10:54:08,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:08,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 10:54:08,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2029402568, now seen corresponding path program 1 times [2022-11-16 10:54:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:08,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159369306] [2022-11-16 10:54:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:08,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:08,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159369306] [2022-11-16 10:54:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159369306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:08,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:08,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835300023] [2022-11-16 10:54:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:08,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:08,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:08,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 280 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:08,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:08,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:09,405 INFO L130 PetriNetUnfolder]: 172/1245 cut-off events. [2022-11-16 10:54:09,406 INFO L131 PetriNetUnfolder]: For 153/277 co-relation queries the response was YES. [2022-11-16 10:54:09,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 1245 events. 172/1245 cut-off events. For 153/277 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9307 event pairs, 2 based on Foata normal form. 8/1172 useless extension candidates. Maximal degree in co-relation 1927. Up to 178 conditions per place. [2022-11-16 10:54:09,434 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 43 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-11-16 10:54:09,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 298 transitions, 829 flow [2022-11-16 10:54:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2252 transitions. [2022-11-16 10:54:09,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769470404984424 [2022-11-16 10:54:09,440 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2252 transitions. [2022-11-16 10:54:09,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2252 transitions. [2022-11-16 10:54:09,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:09,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2252 transitions. [2022-11-16 10:54:09,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.5) internal successors, (2252), 8 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,453 INFO L175 Difference]: Start difference. First operand has 295 places, 280 transitions, 660 flow. Second operand 8 states and 2252 transitions. [2022-11-16 10:54:09,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 298 transitions, 829 flow [2022-11-16 10:54:09,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:09,459 INFO L231 Difference]: Finished difference. Result has 300 places, 281 transitions, 681 flow [2022-11-16 10:54:09,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=300, PETRI_TRANSITIONS=281} [2022-11-16 10:54:09,460 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 25 predicate places. [2022-11-16 10:54:09,461 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 281 transitions, 681 flow [2022-11-16 10:54:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:09,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 10:54:09,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash 925760780, now seen corresponding path program 1 times [2022-11-16 10:54:09,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:09,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713307184] [2022-11-16 10:54:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:09,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713307184] [2022-11-16 10:54:09,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713307184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:09,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:09,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:09,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907661076] [2022-11-16 10:54:09,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:09,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:09,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:09,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:09,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 281 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:09,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:09,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:10,279 INFO L130 PetriNetUnfolder]: 201/1555 cut-off events. [2022-11-16 10:54:10,279 INFO L131 PetriNetUnfolder]: For 197/757 co-relation queries the response was YES. [2022-11-16 10:54:10,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 1555 events. 201/1555 cut-off events. For 197/757 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13096 event pairs, 90 based on Foata normal form. 6/1321 useless extension candidates. Maximal degree in co-relation 2023. Up to 218 conditions per place. [2022-11-16 10:54:10,322 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 33 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-16 10:54:10,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 292 transitions, 780 flow [2022-11-16 10:54:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1169 transitions. [2022-11-16 10:54:10,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910436137071651 [2022-11-16 10:54:10,327 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1169 transitions. [2022-11-16 10:54:10,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1169 transitions. [2022-11-16 10:54:10,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:10,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1169 transitions. [2022-11-16 10:54:10,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,334 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,334 INFO L175 Difference]: Start difference. First operand has 300 places, 281 transitions, 681 flow. Second operand 4 states and 1169 transitions. [2022-11-16 10:54:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 292 transitions, 780 flow [2022-11-16 10:54:10,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 769 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:10,340 INFO L231 Difference]: Finished difference. Result has 298 places, 281 transitions, 679 flow [2022-11-16 10:54:10,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=298, PETRI_TRANSITIONS=281} [2022-11-16 10:54:10,342 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 23 predicate places. [2022-11-16 10:54:10,342 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 281 transitions, 679 flow [2022-11-16 10:54:10,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:10,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:10,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 10:54:10,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash -567741092, now seen corresponding path program 1 times [2022-11-16 10:54:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:10,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099979659] [2022-11-16 10:54:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:10,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099979659] [2022-11-16 10:54:10,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099979659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:10,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:10,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188912943] [2022-11-16 10:54:10,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:10,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:10,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:10,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 281 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:10,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:10,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:10,993 INFO L130 PetriNetUnfolder]: 127/1134 cut-off events. [2022-11-16 10:54:10,994 INFO L131 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2022-11-16 10:54:11,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 1134 events. 127/1134 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8301 event pairs, 58 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 1665. Up to 154 conditions per place. [2022-11-16 10:54:11,023 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 46 selfloop transitions, 7 changer transitions 0/297 dead transitions. [2022-11-16 10:54:11,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 297 transitions, 832 flow [2022-11-16 10:54:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-11-16 10:54:11,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740542946150422 [2022-11-16 10:54:11,028 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-11-16 10:54:11,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-11-16 10:54:11,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:11,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-11-16 10:54:11,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,039 INFO L175 Difference]: Start difference. First operand has 298 places, 281 transitions, 679 flow. Second operand 7 states and 1964 transitions. [2022-11-16 10:54:11,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 297 transitions, 832 flow [2022-11-16 10:54:11,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 828 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:11,046 INFO L231 Difference]: Finished difference. Result has 305 places, 284 transitions, 711 flow [2022-11-16 10:54:11,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=305, PETRI_TRANSITIONS=284} [2022-11-16 10:54:11,048 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 30 predicate places. [2022-11-16 10:54:11,048 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 284 transitions, 711 flow [2022-11-16 10:54:11,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:11,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 10:54:11,050 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash 306926390, now seen corresponding path program 1 times [2022-11-16 10:54:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:11,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719713812] [2022-11-16 10:54:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:11,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:11,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719713812] [2022-11-16 10:54:11,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719713812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528813803] [2022-11-16 10:54:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:11,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:11,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:11,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 284 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:11,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:11,696 INFO L130 PetriNetUnfolder]: 119/1123 cut-off events. [2022-11-16 10:54:11,696 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-16 10:54:11,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1123 events. 119/1123 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8161 event pairs, 48 based on Foata normal form. 3/1048 useless extension candidates. Maximal degree in co-relation 1702. Up to 129 conditions per place. [2022-11-16 10:54:11,719 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 55 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-16 10:54:11,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 307 transitions, 920 flow [2022-11-16 10:54:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1970 transitions. [2022-11-16 10:54:11,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767245215843347 [2022-11-16 10:54:11,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1970 transitions. [2022-11-16 10:54:11,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1970 transitions. [2022-11-16 10:54:11,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:11,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1970 transitions. [2022-11-16 10:54:11,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.42857142857144) internal successors, (1970), 7 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,739 INFO L175 Difference]: Start difference. First operand has 305 places, 284 transitions, 711 flow. Second operand 7 states and 1970 transitions. [2022-11-16 10:54:11,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 307 transitions, 920 flow [2022-11-16 10:54:11,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 307 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:11,747 INFO L231 Difference]: Finished difference. Result has 313 places, 288 transitions, 758 flow [2022-11-16 10:54:11,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=313, PETRI_TRANSITIONS=288} [2022-11-16 10:54:11,748 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 38 predicate places. [2022-11-16 10:54:11,748 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 288 transitions, 758 flow [2022-11-16 10:54:11,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:11,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:11,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 10:54:11,750 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 245578297, now seen corresponding path program 1 times [2022-11-16 10:54:11,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907961495] [2022-11-16 10:54:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:11,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:11,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907961495] [2022-11-16 10:54:11,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907961495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:11,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:11,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072693609] [2022-11-16 10:54:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:11,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:11,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:11,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 288 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:11,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:11,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:12,876 INFO L130 PetriNetUnfolder]: 590/2942 cut-off events. [2022-11-16 10:54:12,876 INFO L131 PetriNetUnfolder]: For 828/1226 co-relation queries the response was YES. [2022-11-16 10:54:12,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2942 events. 590/2942 cut-off events. For 828/1226 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32213 event pairs, 240 based on Foata normal form. 21/2291 useless extension candidates. Maximal degree in co-relation 4386. Up to 516 conditions per place. [2022-11-16 10:54:12,922 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 35 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-16 10:54:12,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 298 transitions, 854 flow [2022-11-16 10:54:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2022-11-16 10:54:12,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911993769470405 [2022-11-16 10:54:12,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2022-11-16 10:54:12,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2022-11-16 10:54:12,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:12,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2022-11-16 10:54:12,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,936 INFO L175 Difference]: Start difference. First operand has 313 places, 288 transitions, 758 flow. Second operand 4 states and 1171 transitions. [2022-11-16 10:54:12,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 298 transitions, 854 flow [2022-11-16 10:54:12,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 298 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:12,945 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 756 flow [2022-11-16 10:54:12,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2022-11-16 10:54:12,946 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 40 predicate places. [2022-11-16 10:54:12,946 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 756 flow [2022-11-16 10:54:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:12,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:12,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 10:54:12,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1738401710, now seen corresponding path program 1 times [2022-11-16 10:54:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:12,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016917773] [2022-11-16 10:54:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016917773] [2022-11-16 10:54:13,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016917773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:13,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:13,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806881387] [2022-11-16 10:54:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:13,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:13,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:13,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:13,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:13,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:13,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:13,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:13,998 INFO L130 PetriNetUnfolder]: 307/1793 cut-off events. [2022-11-16 10:54:13,998 INFO L131 PetriNetUnfolder]: For 236/350 co-relation queries the response was YES. [2022-11-16 10:54:14,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 1793 events. 307/1793 cut-off events. For 236/350 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15488 event pairs, 2 based on Foata normal form. 0/1598 useless extension candidates. Maximal degree in co-relation 2704. Up to 300 conditions per place. [2022-11-16 10:54:14,041 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 39 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-16 10:54:14,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 302 transitions, 895 flow [2022-11-16 10:54:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2249 transitions. [2022-11-16 10:54:14,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757788161993769 [2022-11-16 10:54:14,047 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2249 transitions. [2022-11-16 10:54:14,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2249 transitions. [2022-11-16 10:54:14,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:14,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2249 transitions. [2022-11-16 10:54:14,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.125) internal successors, (2249), 8 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,061 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 756 flow. Second operand 8 states and 2249 transitions. [2022-11-16 10:54:14,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 302 transitions, 895 flow [2022-11-16 10:54:14,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:14,068 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 781 flow [2022-11-16 10:54:14,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2022-11-16 10:54:14,069 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-16 10:54:14,069 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 781 flow [2022-11-16 10:54:14,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:14,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:14,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 10:54:14,071 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash -977006412, now seen corresponding path program 1 times [2022-11-16 10:54:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:14,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041900101] [2022-11-16 10:54:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:14,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:14,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041900101] [2022-11-16 10:54:14,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041900101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:14,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:14,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:14,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831871321] [2022-11-16 10:54:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:14,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:14,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:14,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-16 10:54:14,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 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) [2022-11-16 10:54:14,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:14,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-16 10:54:14,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:15,243 INFO L130 PetriNetUnfolder]: 681/3532 cut-off events. [2022-11-16 10:54:15,244 INFO L131 PetriNetUnfolder]: For 780/985 co-relation queries the response was YES. [2022-11-16 10:54:15,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 3532 events. 681/3532 cut-off events. For 780/985 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 36385 event pairs, 5 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 4106. Up to 1126 conditions per place. [2022-11-16 10:54:15,287 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 29 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-16 10:54:15,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 293 transitions, 867 flow [2022-11-16 10:54:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2022-11-16 10:54:15,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8904465212876428 [2022-11-16 10:54:15,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2022-11-16 10:54:15,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2022-11-16 10:54:15,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:15,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2022-11-16 10:54:15,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,307 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 781 flow. Second operand 6 states and 1715 transitions. [2022-11-16 10:54:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 293 transitions, 867 flow [2022-11-16 10:54:15,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 293 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:15,316 INFO L231 Difference]: Finished difference. Result has 322 places, 287 transitions, 780 flow [2022-11-16 10:54:15,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=322, PETRI_TRANSITIONS=287} [2022-11-16 10:54:15,318 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-16 10:54:15,318 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 287 transitions, 780 flow [2022-11-16 10:54:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 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) [2022-11-16 10:54:15,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:15,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:15,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 10:54:15,320 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1944120925, now seen corresponding path program 1 times [2022-11-16 10:54:15,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:15,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562760859] [2022-11-16 10:54:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562760859] [2022-11-16 10:54:15,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562760859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:15,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:15,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609783344] [2022-11-16 10:54:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:15,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:15,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:15,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 287 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:15,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:15,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:16,167 INFO L130 PetriNetUnfolder]: 259/1727 cut-off events. [2022-11-16 10:54:16,167 INFO L131 PetriNetUnfolder]: For 266/362 co-relation queries the response was YES. [2022-11-16 10:54:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 1727 events. 259/1727 cut-off events. For 266/362 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14506 event pairs, 2 based on Foata normal form. 0/1572 useless extension candidates. Maximal degree in co-relation 2629. Up to 268 conditions per place. [2022-11-16 10:54:16,224 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 42 selfloop transitions, 9 changer transitions 0/304 dead transitions. [2022-11-16 10:54:16,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 304 transitions, 936 flow [2022-11-16 10:54:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2251 transitions. [2022-11-16 10:54:16,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765576323987538 [2022-11-16 10:54:16,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2251 transitions. [2022-11-16 10:54:16,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2251 transitions. [2022-11-16 10:54:16,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:16,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2251 transitions. [2022-11-16 10:54:16,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.375) internal successors, (2251), 8 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,244 INFO L175 Difference]: Start difference. First operand has 322 places, 287 transitions, 780 flow. Second operand 8 states and 2251 transitions. [2022-11-16 10:54:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 304 transitions, 936 flow [2022-11-16 10:54:16,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 304 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:16,252 INFO L231 Difference]: Finished difference. Result has 327 places, 288 transitions, 801 flow [2022-11-16 10:54:16,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=327, PETRI_TRANSITIONS=288} [2022-11-16 10:54:16,253 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 52 predicate places. [2022-11-16 10:54:16,253 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 288 transitions, 801 flow [2022-11-16 10:54:16,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:16,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:16,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 10:54:16,255 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1724931977, now seen corresponding path program 1 times [2022-11-16 10:54:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:16,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692828341] [2022-11-16 10:54:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692828341] [2022-11-16 10:54:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692828341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:16,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:16,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285729117] [2022-11-16 10:54:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:16,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:16,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 10:54:16,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 288 transitions, 801 flow. Second operand has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:16,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 10:54:16,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:17,476 INFO L130 PetriNetUnfolder]: 729/3644 cut-off events. [2022-11-16 10:54:17,476 INFO L131 PetriNetUnfolder]: For 807/1281 co-relation queries the response was YES. [2022-11-16 10:54:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 3644 events. 729/3644 cut-off events. For 807/1281 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 41644 event pairs, 360 based on Foata normal form. 21/2837 useless extension candidates. Maximal degree in co-relation 5419. Up to 762 conditions per place. [2022-11-16 10:54:17,558 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 32 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-16 10:54:17,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 893 flow [2022-11-16 10:54:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1168 transitions. [2022-11-16 10:54:17,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9096573208722741 [2022-11-16 10:54:17,561 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1168 transitions. [2022-11-16 10:54:17,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1168 transitions. [2022-11-16 10:54:17,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:17,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1168 transitions. [2022-11-16 10:54:17,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,569 INFO L175 Difference]: Start difference. First operand has 327 places, 288 transitions, 801 flow. Second operand 4 states and 1168 transitions. [2022-11-16 10:54:17,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 893 flow [2022-11-16 10:54:17,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 298 transitions, 882 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:17,578 INFO L231 Difference]: Finished difference. Result has 325 places, 288 transitions, 799 flow [2022-11-16 10:54:17,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=325, PETRI_TRANSITIONS=288} [2022-11-16 10:54:17,580 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 50 predicate places. [2022-11-16 10:54:17,580 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 288 transitions, 799 flow [2022-11-16 10:54:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:17,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:17,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 10:54:17,581 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -216458489, now seen corresponding path program 1 times [2022-11-16 10:54:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262553339] [2022-11-16 10:54:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:17,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:17,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262553339] [2022-11-16 10:54:17,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262553339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:17,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:17,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681012051] [2022-11-16 10:54:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:17,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:17,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:17,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 288 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:17,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:18,691 INFO L130 PetriNetUnfolder]: 282/1538 cut-off events. [2022-11-16 10:54:18,691 INFO L131 PetriNetUnfolder]: For 398/897 co-relation queries the response was YES. [2022-11-16 10:54:18,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 1538 events. 282/1538 cut-off events. For 398/897 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13762 event pairs, 145 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 2470. Up to 331 conditions per place. [2022-11-16 10:54:18,739 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 45 selfloop transitions, 7 changer transitions 0/303 dead transitions. [2022-11-16 10:54:18,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 947 flow [2022-11-16 10:54:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-16 10:54:18,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736092567868269 [2022-11-16 10:54:18,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-16 10:54:18,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-16 10:54:18,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:18,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-16 10:54:18,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,760 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,760 INFO L175 Difference]: Start difference. First operand has 325 places, 288 transitions, 799 flow. Second operand 7 states and 1963 transitions. [2022-11-16 10:54:18,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 947 flow [2022-11-16 10:54:18,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 303 transitions, 943 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:18,770 INFO L231 Difference]: Finished difference. Result has 332 places, 291 transitions, 831 flow [2022-11-16 10:54:18,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=332, PETRI_TRANSITIONS=291} [2022-11-16 10:54:18,771 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 57 predicate places. [2022-11-16 10:54:18,771 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 291 transitions, 831 flow [2022-11-16 10:54:18,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:18,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 10:54:18,773 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1688214733, now seen corresponding path program 1 times [2022-11-16 10:54:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:18,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077228782] [2022-11-16 10:54:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:18,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:18,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077228782] [2022-11-16 10:54:18,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077228782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:18,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:18,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067803763] [2022-11-16 10:54:18,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:18,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:18,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 291 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:18,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:18,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:19,663 INFO L130 PetriNetUnfolder]: 262/1512 cut-off events. [2022-11-16 10:54:19,663 INFO L131 PetriNetUnfolder]: For 438/901 co-relation queries the response was YES. [2022-11-16 10:54:19,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 1512 events. 262/1512 cut-off events. For 438/901 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13439 event pairs, 120 based on Foata normal form. 6/1342 useless extension candidates. Maximal degree in co-relation 2558. Up to 276 conditions per place. [2022-11-16 10:54:19,701 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 54 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-11-16 10:54:19,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 313 transitions, 1035 flow [2022-11-16 10:54:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2022-11-16 10:54:19,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8762794837561193 [2022-11-16 10:54:19,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2022-11-16 10:54:19,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2022-11-16 10:54:19,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:19,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2022-11-16 10:54:19,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,713 INFO L175 Difference]: Start difference. First operand has 332 places, 291 transitions, 831 flow. Second operand 7 states and 1969 transitions. [2022-11-16 10:54:19,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 313 transitions, 1035 flow [2022-11-16 10:54:19,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 313 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:19,722 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 878 flow [2022-11-16 10:54:19,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=340, PETRI_TRANSITIONS=295} [2022-11-16 10:54:19,723 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 65 predicate places. [2022-11-16 10:54:19,723 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 878 flow [2022-11-16 10:54:19,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:19,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:19,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 10:54:19,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash -535056487, now seen corresponding path program 1 times [2022-11-16 10:54:19,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:19,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773252761] [2022-11-16 10:54:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:19,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:19,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:19,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773252761] [2022-11-16 10:54:19,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773252761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:19,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:19,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854437052] [2022-11-16 10:54:19,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:19,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:19,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:19,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:19,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 295 transitions, 878 flow. Second operand has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:19,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:20,803 INFO L130 PetriNetUnfolder]: 773/3953 cut-off events. [2022-11-16 10:54:20,803 INFO L131 PetriNetUnfolder]: For 934/1054 co-relation queries the response was YES. [2022-11-16 10:54:20,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 3953 events. 773/3953 cut-off events. For 934/1054 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 44942 event pairs, 2 based on Foata normal form. 0/3225 useless extension candidates. Maximal degree in co-relation 4361. Up to 774 conditions per place. [2022-11-16 10:54:20,858 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-16 10:54:20,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 309 transitions, 1008 flow [2022-11-16 10:54:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2248 transitions. [2022-11-16 10:54:20,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753894080996885 [2022-11-16 10:54:20,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2248 transitions. [2022-11-16 10:54:20,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2248 transitions. [2022-11-16 10:54:20,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:20,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2248 transitions. [2022-11-16 10:54:20,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,873 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,874 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 878 flow. Second operand 8 states and 2248 transitions. [2022-11-16 10:54:20,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 309 transitions, 1008 flow [2022-11-16 10:54:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 309 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:20,883 INFO L231 Difference]: Finished difference. Result has 349 places, 296 transitions, 908 flow [2022-11-16 10:54:20,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=908, PETRI_PLACES=349, PETRI_TRANSITIONS=296} [2022-11-16 10:54:20,884 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 74 predicate places. [2022-11-16 10:54:20,885 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 296 transitions, 908 flow [2022-11-16 10:54:20,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:20,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:20,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 10:54:20,886 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash 593119072, now seen corresponding path program 1 times [2022-11-16 10:54:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:20,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333790862] [2022-11-16 10:54:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:21,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333790862] [2022-11-16 10:54:21,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333790862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:21,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:21,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653346567] [2022-11-16 10:54:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:21,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 10:54:21,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 296 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:21,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:21,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 10:54:21,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:22,000 INFO L130 PetriNetUnfolder]: 647/3783 cut-off events. [2022-11-16 10:54:22,000 INFO L131 PetriNetUnfolder]: For 1014/1116 co-relation queries the response was YES. [2022-11-16 10:54:22,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6127 conditions, 3783 events. 647/3783 cut-off events. For 1014/1116 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 42191 event pairs, 2 based on Foata normal form. 0/3207 useless extension candidates. Maximal degree in co-relation 4277. Up to 688 conditions per place. [2022-11-16 10:54:22,046 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 41 selfloop transitions, 9 changer transitions 0/312 dead transitions. [2022-11-16 10:54:22,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 312 transitions, 1055 flow [2022-11-16 10:54:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2250 transitions. [2022-11-16 10:54:22,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761682242990654 [2022-11-16 10:54:22,050 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2250 transitions. [2022-11-16 10:54:22,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2250 transitions. [2022-11-16 10:54:22,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:22,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2250 transitions. [2022-11-16 10:54:22,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.25) internal successors, (2250), 8 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,058 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,058 INFO L175 Difference]: Start difference. First operand has 349 places, 296 transitions, 908 flow. Second operand 8 states and 2250 transitions. [2022-11-16 10:54:22,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 312 transitions, 1055 flow [2022-11-16 10:54:22,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 1046 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:22,071 INFO L231 Difference]: Finished difference. Result has 354 places, 297 transitions, 929 flow [2022-11-16 10:54:22,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=354, PETRI_TRANSITIONS=297} [2022-11-16 10:54:22,072 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 79 predicate places. [2022-11-16 10:54:22,072 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 297 transitions, 929 flow [2022-11-16 10:54:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:22,074 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:22,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 10:54:22,074 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1470243196, now seen corresponding path program 1 times [2022-11-16 10:54:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022548588] [2022-11-16 10:54:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022548588] [2022-11-16 10:54:22,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022548588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:22,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:22,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437520622] [2022-11-16 10:54:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:22,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:22,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 297 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:22,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:22,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:23,328 INFO L130 PetriNetUnfolder]: 1089/3892 cut-off events. [2022-11-16 10:54:23,329 INFO L131 PetriNetUnfolder]: For 1633/2097 co-relation queries the response was YES. [2022-11-16 10:54:23,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 3892 events. 1089/3892 cut-off events. For 1633/2097 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 48513 event pairs, 580 based on Foata normal form. 23/3005 useless extension candidates. Maximal degree in co-relation 7085. Up to 1213 conditions per place. [2022-11-16 10:54:23,394 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 40 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-11-16 10:54:23,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 311 transitions, 1067 flow [2022-11-16 10:54:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1962 transitions. [2022-11-16 10:54:23,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731642189586115 [2022-11-16 10:54:23,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1962 transitions. [2022-11-16 10:54:23,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1962 transitions. [2022-11-16 10:54:23,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:23,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1962 transitions. [2022-11-16 10:54:23,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.2857142857143) internal successors, (1962), 7 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,405 INFO L175 Difference]: Start difference. First operand has 354 places, 297 transitions, 929 flow. Second operand 7 states and 1962 transitions. [2022-11-16 10:54:23,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 311 transitions, 1067 flow [2022-11-16 10:54:23,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 311 transitions, 1056 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:23,418 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 954 flow [2022-11-16 10:54:23,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2022-11-16 10:54:23,419 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 83 predicate places. [2022-11-16 10:54:23,419 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 954 flow [2022-11-16 10:54:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:23,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:23,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 10:54:23,421 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 10:54:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1900834914, now seen corresponding path program 1 times [2022-11-16 10:54:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:23,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374479522] [2022-11-16 10:54:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:23,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374479522] [2022-11-16 10:54:23,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374479522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:23,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:23,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048720590] [2022-11-16 10:54:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:23,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:23,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:23,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-16 10:54:23,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:23,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-16 10:54:23,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:24,751 INFO L130 PetriNetUnfolder]: 1009/3791 cut-off events. [2022-11-16 10:54:24,752 INFO L131 PetriNetUnfolder]: For 1716/2154 co-relation queries the response was YES. [2022-11-16 10:54:24,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 3791 events. 1009/3791 cut-off events. For 1716/2154 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 46579 event pairs, 480 based on Foata normal form. 21/3069 useless extension candidates. Maximal degree in co-relation 7407. Up to 1008 conditions per place. [2022-11-16 10:54:24,780 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 0 selfloop transitions, 0 changer transitions 321/321 dead transitions. [2022-11-16 10:54:24,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 321 transitions, 1148 flow [2022-11-16 10:54:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1968 transitions. [2022-11-16 10:54:24,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758344459279038 [2022-11-16 10:54:24,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1968 transitions. [2022-11-16 10:54:24,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1968 transitions. [2022-11-16 10:54:24,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:24,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1968 transitions. [2022-11-16 10:54:24,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.14285714285717) internal successors, (1968), 7 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,792 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 954 flow. Second operand 7 states and 1968 transitions. [2022-11-16 10:54:24,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 321 transitions, 1148 flow [2022-11-16 10:54:24,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 321 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:24,811 INFO L231 Difference]: Finished difference. Result has 362 places, 0 transitions, 0 flow [2022-11-16 10:54:24,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=362, PETRI_TRANSITIONS=0} [2022-11-16 10:54:24,812 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 87 predicate places. [2022-11-16 10:54:24,812 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 0 transitions, 0 flow [2022-11-16 10:54:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:24,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-16 10:54:24,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-16 10:54:24,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-16 10:54:24,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-16 10:54:24,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-16 10:54:24,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-16 10:54:24,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-16 10:54:24,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-16 10:54:24,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-16 10:54:24,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-16 10:54:24,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-16 10:54:24,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-16 10:54:24,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-16 10:54:24,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-16 10:54:24,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-16 10:54:24,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-16 10:54:24,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-16 10:54:24,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-16 10:54:24,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-16 10:54:24,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-16 10:54:24,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-16 10:54:24,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-16 10:54:24,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-16 10:54:24,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-16 10:54:24,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-16 10:54:24,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-16 10:54:24,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-16 10:54:24,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-16 10:54:24,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-16 10:54:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 10:54:24,823 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:24,829 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:54:24,830 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:54:24,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:54:24 BasicIcfg [2022-11-16 10:54:24,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:54:24,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:54:24,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:54:24,836 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:54:24,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58" (3/4) ... [2022-11-16 10:54:24,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:54:24,845 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 10:54:24,846 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 10:54:24,846 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 10:54:24,850 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 10:54:24,850 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 10:54:24,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:54:24,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:54:24,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:54:24,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:54:24,898 INFO L158 Benchmark]: Toolchain (without parser) took 27271.75ms. Allocated memory was 113.2MB in the beginning and 929.0MB in the end (delta: 815.8MB). Free memory was 69.5MB in the beginning and 706.5MB in the end (delta: -637.0MB). Peak memory consumption was 178.4MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,898 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:24,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.13ms. Allocated memory is still 113.2MB. Free memory was 69.3MB in the beginning and 86.8MB in the end (delta: -17.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.69ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 84.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,899 INFO L158 Benchmark]: Boogie Preprocessor took 32.05ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 83.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,899 INFO L158 Benchmark]: RCFGBuilder took 848.79ms. Allocated memory is still 113.2MB. Free memory was 82.6MB in the beginning and 59.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,900 INFO L158 Benchmark]: TraceAbstraction took 25872.20ms. Allocated memory was 113.2MB in the beginning and 929.0MB in the end (delta: 815.8MB). Free memory was 58.6MB in the beginning and 709.7MB in the end (delta: -651.1MB). Peak memory consumption was 561.9MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,900 INFO L158 Benchmark]: Witness Printer took 61.52ms. Allocated memory is still 929.0MB. Free memory was 709.7MB in the beginning and 706.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:24,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.13ms. Allocated memory is still 113.2MB. Free memory was 69.3MB in the beginning and 86.8MB in the end (delta: -17.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.69ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 84.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.05ms. Allocated memory is still 113.2MB. Free memory was 84.7MB in the beginning and 83.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 848.79ms. Allocated memory is still 113.2MB. Free memory was 82.6MB in the beginning and 59.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 25872.20ms. Allocated memory was 113.2MB in the beginning and 929.0MB in the end (delta: 815.8MB). Free memory was 58.6MB in the beginning and 709.7MB in the end (delta: -651.1MB). Peak memory consumption was 561.9MB. Max. memory is 16.1GB. * Witness Printer took 61.52ms. Allocated memory is still 929.0MB. Free memory was 709.7MB in the beginning and 706.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 494 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.5s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1493 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1493 mSDsluCounter, 723 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2358 IncrementalHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 369 mSDtfsCounter, 2358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=954occurred in iteration=26, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2229 NumberOfCodeBlocks, 2229 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 10:54:24,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccda91e0-abfc-4ef5-afd5-a7c471ef4146/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE