./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:09:40,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:40,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:40,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:40,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:40,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:40,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:40,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:40,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:40,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:40,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:40,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:40,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:40,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:40,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:40,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:40,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:40,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:40,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:40,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:40,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:40,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:40,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:40,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:40,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:40,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:40,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:40,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:40,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:40,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:40,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:40,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:40,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:40,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:40,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:40,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:40,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:40,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:40,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:40,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:40,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:40,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:09:40,635 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:40,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:40,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:40,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:40,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:40,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:40,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:40,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:40,639 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:40,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:40,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:40,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:09:40,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:40,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:40,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:40,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:40,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:40,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:40,641 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:09:40,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:40,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:40,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:40,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:40,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:40,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:40,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:40,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:40,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:40,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:40,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:40,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:40,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:40,645 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:40,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:40,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:40,646 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_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-11-18 21:09:40,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:40,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:40,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:40,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:40,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:40,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-18 21:09:41,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/data/e993859c0/2fedc9faaa3f499b903bef9cc295fe1f/FLAGeefd883fb [2022-11-18 21:09:41,593 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:41,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-18 21:09:41,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/data/e993859c0/2fedc9faaa3f499b903bef9cc295fe1f/FLAGeefd883fb [2022-11-18 21:09:41,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/data/e993859c0/2fedc9faaa3f499b903bef9cc295fe1f [2022-11-18 21:09:41,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:41,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:41,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:41,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:41,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:41,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:41" (1/1) ... [2022-11-18 21:09:41,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e82ef14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:41, skipping insertion in model container [2022-11-18 21:09:41,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:41" (1/1) ... [2022-11-18 21:09:42,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:42,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:42,254 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-18 21:09:42,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:42,270 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:42,294 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-18 21:09:42,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:42,314 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:42,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42 WrapperNode [2022-11-18 21:09:42,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:42,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:42,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:42,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:42,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,370 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 238 [2022-11-18 21:09:42,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:42,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:42,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:42,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:42,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:42,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:42,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:42,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:42,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (1/1) ... [2022-11-18 21:09:42,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:42,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:42,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:09:42,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:09:42,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:09:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:09:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:42,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:09:42,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:09:42,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:42,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:43,113 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:43,124 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:43,125 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 21:09:43,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:43 BoogieIcfgContainer [2022-11-18 21:09:43,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:43,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:43,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:43,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:43,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:41" (1/3) ... [2022-11-18 21:09:43,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118f4c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:43, skipping insertion in model container [2022-11-18 21:09:43,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:42" (2/3) ... [2022-11-18 21:09:43,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118f4c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:43, skipping insertion in model container [2022-11-18 21:09:43,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:43" (3/3) ... [2022-11-18 21:09:43,138 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-11-18 21:09:43,151 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:09:43,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:43,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-18 21:09:43,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:09:43,336 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:09:43,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 666 flow [2022-11-18 21:09:43,602 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-11-18 21:09:43,602 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:09:43,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 323 events. 25/323 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 634 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-11-18 21:09:43,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 666 flow [2022-11-18 21:09:43,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 585 flow [2022-11-18 21:09:43,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:43,650 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;@51da7cda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:43,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-18 21:09:43,662 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-11-18 21:09:43,662 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:43,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:43,663 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] [2022-11-18 21:09:43,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2019046624, now seen corresponding path program 1 times [2022-11-18 21:09:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:43,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068986245] [2022-11-18 21:09:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:44,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068986245] [2022-11-18 21:09:44,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068986245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:44,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:44,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511314810] [2022-11-18 21:09:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:44,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:44,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-18 21:09:44,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 288 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:44,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-18 21:09:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:44,384 INFO L130 PetriNetUnfolder]: 19/480 cut-off events. [2022-11-18 21:09:44,384 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 21:09:44,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 480 events. 19/480 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1580 event pairs, 0 based on Foata normal form. 20/424 useless extension candidates. Maximal degree in co-relation 359. Up to 29 conditions per place. [2022-11-18 21:09:44,395 INFO L137 encePairwiseOnDemand]: 300/325 looper letters, 38 selfloop transitions, 9 changer transitions 4/296 dead transitions. [2022-11-18 21:09:44,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 296 transitions, 704 flow [2022-11-18 21:09:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1476 transitions. [2022-11-18 21:09:44,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9083076923076923 [2022-11-18 21:09:44,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1476 transitions. [2022-11-18 21:09:44,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1476 transitions. [2022-11-18 21:09:44,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:44,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1476 transitions. [2022-11-18 21:09:44,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,457 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,467 INFO L175 Difference]: Start difference. First operand has 273 places, 288 transitions, 585 flow. Second operand 5 states and 1476 transitions. [2022-11-18 21:09:44,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 296 transitions, 704 flow [2022-11-18 21:09:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 296 transitions, 694 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:44,486 INFO L231 Difference]: Finished difference. Result has 277 places, 279 transitions, 615 flow [2022-11-18 21:09:44,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=277, PETRI_TRANSITIONS=279} [2022-11-18 21:09:44,500 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 4 predicate places. [2022-11-18 21:09:44,501 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 279 transitions, 615 flow [2022-11-18 21:09:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:44,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:44,503 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:44,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:44,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2071201129, now seen corresponding path program 1 times [2022-11-18 21:09:44,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:44,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643610098] [2022-11-18 21:09:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643610098] [2022-11-18 21:09:44,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643610098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990510103] [2022-11-18 21:09:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:44,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:44,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:44,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:09:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:44,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:44,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:45,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990510103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:45,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:45,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:09:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7619404] [2022-11-18 21:09:45,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:09:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:09:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:09:45,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-18 21:09:45,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 279 transitions, 615 flow. Second operand has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:45,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-18 21:09:45,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:45,581 INFO L130 PetriNetUnfolder]: 46/1092 cut-off events. [2022-11-18 21:09:45,581 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-18 21:09:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 1092 events. 46/1092 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5854 event pairs, 0 based on Foata normal form. 6/928 useless extension candidates. Maximal degree in co-relation 820. Up to 22 conditions per place. [2022-11-18 21:09:45,597 INFO L137 encePairwiseOnDemand]: 310/325 looper letters, 71 selfloop transitions, 40 changer transitions 0/356 dead transitions. [2022-11-18 21:09:45,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 356 transitions, 1057 flow [2022-11-18 21:09:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:09:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:09:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5175 transitions. [2022-11-18 21:09:45,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8846153846153846 [2022-11-18 21:09:45,609 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5175 transitions. [2022-11-18 21:09:45,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5175 transitions. [2022-11-18 21:09:45,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:45,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5175 transitions. [2022-11-18 21:09:45,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 287.5) internal successors, (5175), 18 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,642 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,642 INFO L175 Difference]: Start difference. First operand has 277 places, 279 transitions, 615 flow. Second operand 18 states and 5175 transitions. [2022-11-18 21:09:45,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 356 transitions, 1057 flow [2022-11-18 21:09:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 356 transitions, 1052 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:09:45,652 INFO L231 Difference]: Finished difference. Result has 293 places, 306 transitions, 848 flow [2022-11-18 21:09:45,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=848, PETRI_PLACES=293, PETRI_TRANSITIONS=306} [2022-11-18 21:09:45,653 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 20 predicate places. [2022-11-18 21:09:45,653 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 306 transitions, 848 flow [2022-11-18 21:09:45,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:45,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:45,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:45,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:45,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -217273840, now seen corresponding path program 1 times [2022-11-18 21:09:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314824487] [2022-11-18 21:09:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314824487] [2022-11-18 21:09:46,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314824487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:46,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174362743] [2022-11-18 21:09:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:46,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:46,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:09:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:46,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:46,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:46,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:46,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174362743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:46,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:46,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:09:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124416377] [2022-11-18 21:09:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:46,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 325 [2022-11-18 21:09:46,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 306 transitions, 848 flow. Second operand has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:46,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:46,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 325 [2022-11-18 21:09:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:46,639 INFO L130 PetriNetUnfolder]: 46/1084 cut-off events. [2022-11-18 21:09:46,640 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-18 21:09:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 1084 events. 46/1084 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5803 event pairs, 0 based on Foata normal form. 8/922 useless extension candidates. Maximal degree in co-relation 1019. Up to 44 conditions per place. [2022-11-18 21:09:46,656 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 39 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-11-18 21:09:46,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 311 transitions, 960 flow [2022-11-18 21:09:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2022-11-18 21:09:46,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8852747252747253 [2022-11-18 21:09:46,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2022-11-18 21:09:46,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2022-11-18 21:09:46,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:46,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2022-11-18 21:09:46,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:46,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:46,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 325.0) internal successors, (2600), 8 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:46,713 INFO L175 Difference]: Start difference. First operand has 293 places, 306 transitions, 848 flow. Second operand 7 states and 2014 transitions. [2022-11-18 21:09:46,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 311 transitions, 960 flow [2022-11-18 21:09:46,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 311 transitions, 886 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:46,727 INFO L231 Difference]: Finished difference. Result has 288 places, 298 transitions, 774 flow [2022-11-18 21:09:46,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=288, PETRI_TRANSITIONS=298} [2022-11-18 21:09:46,730 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 15 predicate places. [2022-11-18 21:09:46,730 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 298 transitions, 774 flow [2022-11-18 21:09:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:46,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:46,731 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] [2022-11-18 21:09:46,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:46,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash 136033972, now seen corresponding path program 1 times [2022-11-18 21:09:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:46,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671490098] [2022-11-18 21:09:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671490098] [2022-11-18 21:09:47,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671490098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:47,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:47,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:09:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817954735] [2022-11-18 21:09:47,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:47,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:09:47,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:47,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:09:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:09:47,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 325 [2022-11-18 21:09:47,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 298 transitions, 774 flow. Second operand has 11 states, 11 states have (on average 235.0909090909091) internal successors, (2586), 11 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:47,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:47,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 325 [2022-11-18 21:09:47,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:49,473 INFO L130 PetriNetUnfolder]: 1031/10066 cut-off events. [2022-11-18 21:09:49,473 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-11-18 21:09:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11751 conditions, 10066 events. 1031/10066 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 117132 event pairs, 480 based on Foata normal form. 0/7996 useless extension candidates. Maximal degree in co-relation 9374. Up to 598 conditions per place. [2022-11-18 21:09:49,559 INFO L137 encePairwiseOnDemand]: 307/325 looper letters, 113 selfloop transitions, 21 changer transitions 0/355 dead transitions. [2022-11-18 21:09:49,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 355 transitions, 1208 flow [2022-11-18 21:09:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:09:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 21:09:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3825 transitions. [2022-11-18 21:09:49,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7355769230769231 [2022-11-18 21:09:49,570 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3825 transitions. [2022-11-18 21:09:49,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3825 transitions. [2022-11-18 21:09:49,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:49,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3825 transitions. [2022-11-18 21:09:49,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 239.0625) internal successors, (3825), 16 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:49,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:49,597 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 325.0) internal successors, (5525), 17 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:49,597 INFO L175 Difference]: Start difference. First operand has 288 places, 298 transitions, 774 flow. Second operand 16 states and 3825 transitions. [2022-11-18 21:09:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 355 transitions, 1208 flow [2022-11-18 21:09:49,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 355 transitions, 1164 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:09:49,608 INFO L231 Difference]: Finished difference. Result has 306 places, 306 transitions, 843 flow [2022-11-18 21:09:49,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=843, PETRI_PLACES=306, PETRI_TRANSITIONS=306} [2022-11-18 21:09:49,609 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 33 predicate places. [2022-11-18 21:09:49,609 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 306 transitions, 843 flow [2022-11-18 21:09:49,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 235.0909090909091) internal successors, (2586), 11 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:49,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:49,611 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] [2022-11-18 21:09:49,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:09:49,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:49,612 INFO L85 PathProgramCache]: Analyzing trace with hash -77913376, now seen corresponding path program 1 times [2022-11-18 21:09:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868590639] [2022-11-18 21:09:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:49,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:49,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:49,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868590639] [2022-11-18 21:09:49,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868590639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:49,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:49,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:09:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722189350] [2022-11-18 21:09:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:49,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:09:49,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:09:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:49,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 325 [2022-11-18 21:09:49,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 306 transitions, 843 flow. Second operand has 8 states, 8 states have (on average 263.25) internal successors, (2106), 8 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:49,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:49,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 325 [2022-11-18 21:09:49,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:51,669 INFO L130 PetriNetUnfolder]: 937/9275 cut-off events. [2022-11-18 21:09:51,669 INFO L131 PetriNetUnfolder]: For 682/682 co-relation queries the response was YES. [2022-11-18 21:09:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 9275 events. 937/9275 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 105912 event pairs, 319 based on Foata normal form. 61/7670 useless extension candidates. Maximal degree in co-relation 9772. Up to 860 conditions per place. [2022-11-18 21:09:51,757 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 86 selfloop transitions, 15 changer transitions 0/333 dead transitions. [2022-11-18 21:09:51,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 333 transitions, 1129 flow [2022-11-18 21:09:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:09:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:09:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2937 transitions. [2022-11-18 21:09:51,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8215384615384616 [2022-11-18 21:09:51,765 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2937 transitions. [2022-11-18 21:09:51,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2937 transitions. [2022-11-18 21:09:51,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2937 transitions. [2022-11-18 21:09:51,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:51,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:51,802 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:51,803 INFO L175 Difference]: Start difference. First operand has 306 places, 306 transitions, 843 flow. Second operand 11 states and 2937 transitions. [2022-11-18 21:09:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 333 transitions, 1129 flow [2022-11-18 21:09:51,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 333 transitions, 1123 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:51,818 INFO L231 Difference]: Finished difference. Result has 317 places, 310 transitions, 909 flow [2022-11-18 21:09:51,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=909, PETRI_PLACES=317, PETRI_TRANSITIONS=310} [2022-11-18 21:09:51,822 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 44 predicate places. [2022-11-18 21:09:51,822 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 310 transitions, 909 flow [2022-11-18 21:09:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.25) internal successors, (2106), 8 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:51,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:51,824 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:51,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:09:51,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash -641400544, now seen corresponding path program 2 times [2022-11-18 21:09:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:51,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53181095] [2022-11-18 21:09:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:52,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53181095] [2022-11-18 21:09:52,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53181095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536384982] [2022-11-18 21:09:52,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:52,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:52,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:52,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:52,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:52,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:52,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:09:52,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:52,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:52,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536384982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:52,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:52,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 21:09:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025558279] [2022-11-18 21:09:52,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:52,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:09:52,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:09:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:09:52,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 325 [2022-11-18 21:09:52,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 310 transitions, 909 flow. Second operand has 18 states, 18 states have (on average 255.61111111111111) internal successors, (4601), 18 states have internal predecessors, (4601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:52,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:52,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 325 [2022-11-18 21:09:52,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:55,872 INFO L130 PetriNetUnfolder]: 1313/12951 cut-off events. [2022-11-18 21:09:55,872 INFO L131 PetriNetUnfolder]: For 1378/1378 co-relation queries the response was YES. [2022-11-18 21:09:55,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16165 conditions, 12951 events. 1313/12951 cut-off events. For 1378/1378 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 154142 event pairs, 611 based on Foata normal form. 6/10627 useless extension candidates. Maximal degree in co-relation 13985. Up to 295 conditions per place. [2022-11-18 21:09:55,975 INFO L137 encePairwiseOnDemand]: 305/325 looper letters, 223 selfloop transitions, 65 changer transitions 0/506 dead transitions. [2022-11-18 21:09:55,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 506 transitions, 2267 flow [2022-11-18 21:09:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 21:09:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 21:09:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12607 transitions. [2022-11-18 21:09:56,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7916483516483517 [2022-11-18 21:09:56,010 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12607 transitions. [2022-11-18 21:09:56,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12607 transitions. [2022-11-18 21:09:56,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:56,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12607 transitions. [2022-11-18 21:09:56,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 257.2857142857143) internal successors, (12607), 49 states have internal predecessors, (12607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 325.0) internal successors, (16250), 50 states have internal predecessors, (16250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,083 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 325.0) internal successors, (16250), 50 states have internal predecessors, (16250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,083 INFO L175 Difference]: Start difference. First operand has 317 places, 310 transitions, 909 flow. Second operand 49 states and 12607 transitions. [2022-11-18 21:09:56,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 506 transitions, 2267 flow [2022-11-18 21:09:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 506 transitions, 2241 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 21:09:56,099 INFO L231 Difference]: Finished difference. Result has 362 places, 333 transitions, 1164 flow [2022-11-18 21:09:56,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1164, PETRI_PLACES=362, PETRI_TRANSITIONS=333} [2022-11-18 21:09:56,100 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 89 predicate places. [2022-11-18 21:09:56,100 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 333 transitions, 1164 flow [2022-11-18 21:09:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 255.61111111111111) internal successors, (4601), 18 states have internal predecessors, (4601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:56,102 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] [2022-11-18 21:09:56,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:56,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash 129225358, now seen corresponding path program 1 times [2022-11-18 21:09:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:56,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794547792] [2022-11-18 21:09:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:56,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794547792] [2022-11-18 21:09:56,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794547792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:56,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:56,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:09:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308781222] [2022-11-18 21:09:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:09:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:09:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:09:56,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 325 [2022-11-18 21:09:56,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 333 transitions, 1164 flow. Second operand has 12 states, 12 states have (on average 234.91666666666666) internal successors, (2819), 12 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:56,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:56,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 325 [2022-11-18 21:09:56,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:59,179 INFO L130 PetriNetUnfolder]: 1293/12776 cut-off events. [2022-11-18 21:09:59,179 INFO L131 PetriNetUnfolder]: For 1637/1637 co-relation queries the response was YES. [2022-11-18 21:09:59,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15993 conditions, 12776 events. 1293/12776 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 151712 event pairs, 533 based on Foata normal form. 21/10501 useless extension candidates. Maximal degree in co-relation 13949. Up to 1346 conditions per place. [2022-11-18 21:09:59,259 INFO L137 encePairwiseOnDemand]: 305/325 looper letters, 103 selfloop transitions, 36 changer transitions 0/364 dead transitions. [2022-11-18 21:09:59,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 364 transitions, 1539 flow [2022-11-18 21:09:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:09:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:09:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4269 transitions. [2022-11-18 21:09:59,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7297435897435898 [2022-11-18 21:09:59,265 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4269 transitions. [2022-11-18 21:09:59,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4269 transitions. [2022-11-18 21:09:59,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:59,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4269 transitions. [2022-11-18 21:09:59,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 237.16666666666666) internal successors, (4269), 18 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:59,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:59,284 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 325.0) internal successors, (6175), 19 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:59,284 INFO L175 Difference]: Start difference. First operand has 362 places, 333 transitions, 1164 flow. Second operand 18 states and 4269 transitions. [2022-11-18 21:09:59,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 364 transitions, 1539 flow [2022-11-18 21:09:59,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 364 transitions, 1426 flow, removed 15 selfloop flow, removed 19 redundant places. [2022-11-18 21:09:59,298 INFO L231 Difference]: Finished difference. Result has 363 places, 335 transitions, 1158 flow [2022-11-18 21:09:59,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1158, PETRI_PLACES=363, PETRI_TRANSITIONS=335} [2022-11-18 21:09:59,300 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 90 predicate places. [2022-11-18 21:09:59,300 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 335 transitions, 1158 flow [2022-11-18 21:09:59,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 234.91666666666666) internal successors, (2819), 12 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:59,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:59,301 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] [2022-11-18 21:09:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:09:59,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:09:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1715872949, now seen corresponding path program 1 times [2022-11-18 21:09:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:59,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567380587] [2022-11-18 21:09:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:59,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567380587] [2022-11-18 21:09:59,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567380587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:59,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700844048] [2022-11-18 21:09:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:59,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:59,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:09:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:59,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:09:59,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:00,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:00,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700844048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:00,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:00,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2022-11-18 21:10:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196140387] [2022-11-18 21:10:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:00,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:10:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:10:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:10:00,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 325 [2022-11-18 21:10:00,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 335 transitions, 1158 flow. Second operand has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:00,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:00,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 325 [2022-11-18 21:10:00,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:02,497 INFO L130 PetriNetUnfolder]: 1250/13432 cut-off events. [2022-11-18 21:10:02,497 INFO L131 PetriNetUnfolder]: For 2561/2561 co-relation queries the response was YES. [2022-11-18 21:10:02,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 13432 events. 1250/13432 cut-off events. For 2561/2561 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 162725 event pairs, 520 based on Foata normal form. 98/11082 useless extension candidates. Maximal degree in co-relation 15356. Up to 1476 conditions per place. [2022-11-18 21:10:02,601 INFO L137 encePairwiseOnDemand]: 311/325 looper letters, 56 selfloop transitions, 22 changer transitions 0/330 dead transitions. [2022-11-18 21:10:02,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 330 transitions, 1260 flow [2022-11-18 21:10:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:10:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:10:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2659 transitions. [2022-11-18 21:10:02,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7437762237762238 [2022-11-18 21:10:02,605 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2659 transitions. [2022-11-18 21:10:02,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2659 transitions. [2022-11-18 21:10:02,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:02,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2659 transitions. [2022-11-18 21:10:02,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 241.72727272727272) internal successors, (2659), 11 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,617 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 325.0) internal successors, (3900), 12 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,618 INFO L175 Difference]: Start difference. First operand has 363 places, 335 transitions, 1158 flow. Second operand 11 states and 2659 transitions. [2022-11-18 21:10:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 330 transitions, 1260 flow [2022-11-18 21:10:02,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 330 transitions, 1186 flow, removed 1 selfloop flow, removed 19 redundant places. [2022-11-18 21:10:02,628 INFO L231 Difference]: Finished difference. Result has 351 places, 330 transitions, 1074 flow [2022-11-18 21:10:02,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1074, PETRI_PLACES=351, PETRI_TRANSITIONS=330} [2022-11-18 21:10:02,630 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 78 predicate places. [2022-11-18 21:10:02,630 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 330 transitions, 1074 flow [2022-11-18 21:10:02,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:02,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:02,631 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] [2022-11-18 21:10:02,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:02,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:02,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:02,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1278009817, now seen corresponding path program 1 times [2022-11-18 21:10:02,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:02,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696338870] [2022-11-18 21:10:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:02,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696338870] [2022-11-18 21:10:03,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696338870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941638910] [2022-11-18 21:10:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:03,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:03,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:10:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:03,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:10:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:03,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941638910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:03,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2022-11-18 21:10:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706026362] [2022-11-18 21:10:03,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:03,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:10:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:10:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:10:03,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 325 [2022-11-18 21:10:03,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 330 transitions, 1074 flow. Second operand has 9 states, 9 states have (on average 241.11111111111111) internal successors, (2170), 9 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:03,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:03,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 325 [2022-11-18 21:10:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:05,790 INFO L130 PetriNetUnfolder]: 1058/11476 cut-off events. [2022-11-18 21:10:05,791 INFO L131 PetriNetUnfolder]: For 912/912 co-relation queries the response was YES. [2022-11-18 21:10:05,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13458 conditions, 11476 events. 1058/11476 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 133447 event pairs, 430 based on Foata normal form. 108/9484 useless extension candidates. Maximal degree in co-relation 11618. Up to 1213 conditions per place. [2022-11-18 21:10:05,864 INFO L137 encePairwiseOnDemand]: 307/325 looper letters, 45 selfloop transitions, 29 changer transitions 0/326 dead transitions. [2022-11-18 21:10:05,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 326 transitions, 1192 flow [2022-11-18 21:10:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:10:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:10:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3131 transitions. [2022-11-18 21:10:05,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7410650887573964 [2022-11-18 21:10:05,869 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3131 transitions. [2022-11-18 21:10:05,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3131 transitions. [2022-11-18 21:10:05,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:05,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3131 transitions. [2022-11-18 21:10:05,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:05,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:05,882 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 325.0) internal successors, (4550), 14 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:05,882 INFO L175 Difference]: Start difference. First operand has 351 places, 330 transitions, 1074 flow. Second operand 13 states and 3131 transitions. [2022-11-18 21:10:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 326 transitions, 1192 flow [2022-11-18 21:10:05,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 326 transitions, 1126 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-11-18 21:10:05,891 INFO L231 Difference]: Finished difference. Result has 345 places, 326 transitions, 1036 flow [2022-11-18 21:10:05,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1036, PETRI_PLACES=345, PETRI_TRANSITIONS=326} [2022-11-18 21:10:05,893 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 72 predicate places. [2022-11-18 21:10:05,893 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 326 transitions, 1036 flow [2022-11-18 21:10:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 241.11111111111111) internal successors, (2170), 9 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:05,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:05,894 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] [2022-11-18 21:10:05,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:06,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash 27620158, now seen corresponding path program 1 times [2022-11-18 21:10:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243560698] [2022-11-18 21:10:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243560698] [2022-11-18 21:10:06,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243560698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:06,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:06,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453493392] [2022-11-18 21:10:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:06,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 325 [2022-11-18 21:10:06,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 326 transitions, 1036 flow. Second operand has 4 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) [2022-11-18 21:10:06,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:06,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 325 [2022-11-18 21:10:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:07,475 INFO L130 PetriNetUnfolder]: 702/8038 cut-off events. [2022-11-18 21:10:07,476 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-11-18 21:10:07,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 8038 events. 702/8038 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 88411 event pairs, 184 based on Foata normal form. 0/6746 useless extension candidates. Maximal degree in co-relation 9016. Up to 797 conditions per place. [2022-11-18 21:10:07,535 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 28 selfloop transitions, 4 changer transitions 0/341 dead transitions. [2022-11-18 21:10:07,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 341 transitions, 1137 flow [2022-11-18 21:10:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2022-11-18 21:10:07,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9163076923076923 [2022-11-18 21:10:07,538 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2022-11-18 21:10:07,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2022-11-18 21:10:07,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:07,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2022-11-18 21:10:07,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:07,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:07,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:07,544 INFO L175 Difference]: Start difference. First operand has 345 places, 326 transitions, 1036 flow. Second operand 5 states and 1489 transitions. [2022-11-18 21:10:07,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 341 transitions, 1137 flow [2022-11-18 21:10:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 341 transitions, 1079 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 21:10:07,552 INFO L231 Difference]: Finished difference. Result has 340 places, 329 transitions, 1008 flow [2022-11-18 21:10:07,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1008, PETRI_PLACES=340, PETRI_TRANSITIONS=329} [2022-11-18 21:10:07,554 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 67 predicate places. [2022-11-18 21:10:07,554 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 329 transitions, 1008 flow [2022-11-18 21:10:07,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-11-18 21:10:07,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:07,555 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, 1, 1, 1, 1, 1] [2022-11-18 21:10:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:10:07,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2070988648, now seen corresponding path program 1 times [2022-11-18 21:10:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090287378] [2022-11-18 21:10:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:07,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090287378] [2022-11-18 21:10:07,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090287378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:07,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:10:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941984506] [2022-11-18 21:10:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:10:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:10:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:10:07,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 325 [2022-11-18 21:10:07,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 329 transitions, 1008 flow. Second operand has 4 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) [2022-11-18 21:10:07,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:07,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 325 [2022-11-18 21:10:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:09,782 INFO L130 PetriNetUnfolder]: 1212/11504 cut-off events. [2022-11-18 21:10:09,782 INFO L131 PetriNetUnfolder]: For 958/972 co-relation queries the response was YES. [2022-11-18 21:10:09,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14047 conditions, 11504 events. 1212/11504 cut-off events. For 958/972 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 144422 event pairs, 486 based on Foata normal form. 0/9402 useless extension candidates. Maximal degree in co-relation 12030. Up to 1009 conditions per place. [2022-11-18 21:10:10,055 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 27 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2022-11-18 21:10:10,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 343 transitions, 1101 flow [2022-11-18 21:10:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1488 transitions. [2022-11-18 21:10:10,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9156923076923077 [2022-11-18 21:10:10,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1488 transitions. [2022-11-18 21:10:10,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1488 transitions. [2022-11-18 21:10:10,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:10,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1488 transitions. [2022-11-18 21:10:10,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:10,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:10,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:10,069 INFO L175 Difference]: Start difference. First operand has 340 places, 329 transitions, 1008 flow. Second operand 5 states and 1488 transitions. [2022-11-18 21:10:10,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 343 transitions, 1101 flow [2022-11-18 21:10:10,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:10:10,078 INFO L231 Difference]: Finished difference. Result has 346 places, 332 transitions, 1036 flow [2022-11-18 21:10:10,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1036, PETRI_PLACES=346, PETRI_TRANSITIONS=332} [2022-11-18 21:10:10,079 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 73 predicate places. [2022-11-18 21:10:10,079 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 332 transitions, 1036 flow [2022-11-18 21:10:10,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-11-18 21:10:10,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:10,080 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:10,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:10:10,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2068493101, now seen corresponding path program 1 times [2022-11-18 21:10:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:10,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681378976] [2022-11-18 21:10:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681378976] [2022-11-18 21:10:10,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681378976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:10,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:10,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098295924] [2022-11-18 21:10:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:10,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-18 21:10:10,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 332 transitions, 1036 flow. Second operand has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:10,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:10,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-18 21:10:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:14,703 INFO L130 PetriNetUnfolder]: 3032/32042 cut-off events. [2022-11-18 21:10:14,703 INFO L131 PetriNetUnfolder]: For 1650/1706 co-relation queries the response was YES. [2022-11-18 21:10:14,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38945 conditions, 32042 events. 3032/32042 cut-off events. For 1650/1706 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 456889 event pairs, 1098 based on Foata normal form. 0/26603 useless extension candidates. Maximal degree in co-relation 35219. Up to 2701 conditions per place. [2022-11-18 21:10:14,936 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 120 selfloop transitions, 22 changer transitions 2/382 dead transitions. [2022-11-18 21:10:14,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 382 transitions, 1524 flow [2022-11-18 21:10:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:10:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2663 transitions. [2022-11-18 21:10:14,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193846153846154 [2022-11-18 21:10:14,940 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2663 transitions. [2022-11-18 21:10:14,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2663 transitions. [2022-11-18 21:10:14,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:14,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2663 transitions. [2022-11-18 21:10:14,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:14,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:14,950 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:14,950 INFO L175 Difference]: Start difference. First operand has 346 places, 332 transitions, 1036 flow. Second operand 10 states and 2663 transitions. [2022-11-18 21:10:14,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 382 transitions, 1524 flow [2022-11-18 21:10:14,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 382 transitions, 1522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:10:14,976 INFO L231 Difference]: Finished difference. Result has 356 places, 333 transitions, 1091 flow [2022-11-18 21:10:14,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1091, PETRI_PLACES=356, PETRI_TRANSITIONS=333} [2022-11-18 21:10:14,977 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 83 predicate places. [2022-11-18 21:10:14,978 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 333 transitions, 1091 flow [2022-11-18 21:10:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:14,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:14,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:10:14,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2123285769, now seen corresponding path program 1 times [2022-11-18 21:10:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:14,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624089467] [2022-11-18 21:10:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:15,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:15,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624089467] [2022-11-18 21:10:15,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624089467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:15,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:15,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688492037] [2022-11-18 21:10:15,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:15,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:15,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:15,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-18 21:10:15,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 333 transitions, 1091 flow. Second operand has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:15,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:15,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-18 21:10:15,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:17,806 INFO L130 PetriNetUnfolder]: 2192/16327 cut-off events. [2022-11-18 21:10:17,806 INFO L131 PetriNetUnfolder]: For 1940/1940 co-relation queries the response was YES. [2022-11-18 21:10:17,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22065 conditions, 16327 events. 2192/16327 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 199469 event pairs, 1289 based on Foata normal form. 0/13900 useless extension candidates. Maximal degree in co-relation 20047. Up to 2883 conditions per place. [2022-11-18 21:10:17,968 INFO L137 encePairwiseOnDemand]: 314/325 looper letters, 94 selfloop transitions, 21 changer transitions 28/381 dead transitions. [2022-11-18 21:10:17,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 381 transitions, 1570 flow [2022-11-18 21:10:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:10:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2661 transitions. [2022-11-18 21:10:17,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8187692307692308 [2022-11-18 21:10:17,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2661 transitions. [2022-11-18 21:10:17,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2661 transitions. [2022-11-18 21:10:17,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:17,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2661 transitions. [2022-11-18 21:10:17,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 266.1) internal successors, (2661), 10 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,980 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 325.0) internal successors, (3575), 11 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,980 INFO L175 Difference]: Start difference. First operand has 356 places, 333 transitions, 1091 flow. Second operand 10 states and 2661 transitions. [2022-11-18 21:10:17,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 381 transitions, 1570 flow [2022-11-18 21:10:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 381 transitions, 1531 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:10:17,995 INFO L231 Difference]: Finished difference. Result has 360 places, 332 transitions, 1093 flow [2022-11-18 21:10:17,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1093, PETRI_PLACES=360, PETRI_TRANSITIONS=332} [2022-11-18 21:10:17,999 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 87 predicate places. [2022-11-18 21:10:17,999 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 332 transitions, 1093 flow [2022-11-18 21:10:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:18,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:18,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:10:18,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 82975452, now seen corresponding path program 1 times [2022-11-18 21:10:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:18,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957866430] [2022-11-18 21:10:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:18,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:18,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957866430] [2022-11-18 21:10:18,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957866430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:18,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:18,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184704318] [2022-11-18 21:10:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:18,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:18,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-18 21:10:18,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 332 transitions, 1093 flow. Second operand has 7 states, 7 states have (on average 262.57142857142856) internal successors, (1838), 7 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:18,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-18 21:10:18,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:22,528 INFO L130 PetriNetUnfolder]: 2324/25992 cut-off events. [2022-11-18 21:10:22,528 INFO L131 PetriNetUnfolder]: For 1793/1865 co-relation queries the response was YES. [2022-11-18 21:10:22,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31531 conditions, 25992 events. 2324/25992 cut-off events. For 1793/1865 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 362719 event pairs, 1002 based on Foata normal form. 9/21984 useless extension candidates. Maximal degree in co-relation 30833. Up to 2356 conditions per place. [2022-11-18 21:10:22,740 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 98 selfloop transitions, 15 changer transitions 2/353 dead transitions. [2022-11-18 21:10:22,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 353 transitions, 1385 flow [2022-11-18 21:10:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:10:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:10:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2135 transitions. [2022-11-18 21:10:22,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8211538461538461 [2022-11-18 21:10:22,745 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2135 transitions. [2022-11-18 21:10:22,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2135 transitions. [2022-11-18 21:10:22,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:22,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2135 transitions. [2022-11-18 21:10:22,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 266.875) internal successors, (2135), 8 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,755 INFO L175 Difference]: Start difference. First operand has 360 places, 332 transitions, 1093 flow. Second operand 8 states and 2135 transitions. [2022-11-18 21:10:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 353 transitions, 1385 flow [2022-11-18 21:10:22,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 353 transitions, 1332 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-11-18 21:10:22,784 INFO L231 Difference]: Finished difference. Result has 356 places, 333 transitions, 1087 flow [2022-11-18 21:10:22,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1087, PETRI_PLACES=356, PETRI_TRANSITIONS=333} [2022-11-18 21:10:22,785 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 83 predicate places. [2022-11-18 21:10:22,786 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 333 transitions, 1087 flow [2022-11-18 21:10:22,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.57142857142856) internal successors, (1838), 7 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:22,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:10:22,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash 26290258, now seen corresponding path program 1 times [2022-11-18 21:10:22,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:22,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159969643] [2022-11-18 21:10:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159969643] [2022-11-18 21:10:22,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159969643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:22,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:22,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061396157] [2022-11-18 21:10:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:22,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:22,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 325 [2022-11-18 21:10:22,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 333 transitions, 1087 flow. Second operand has 7 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:22,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 325 [2022-11-18 21:10:22,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:24,981 INFO L130 PetriNetUnfolder]: 1663/12205 cut-off events. [2022-11-18 21:10:24,981 INFO L131 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2022-11-18 21:10:25,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16652 conditions, 12205 events. 1663/12205 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 141930 event pairs, 1012 based on Foata normal form. 0/10372 useless extension candidates. Maximal degree in co-relation 15962. Up to 2512 conditions per place. [2022-11-18 21:10:25,059 INFO L137 encePairwiseOnDemand]: 316/325 looper letters, 82 selfloop transitions, 13 changer transitions 19/352 dead transitions. [2022-11-18 21:10:25,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 1366 flow [2022-11-18 21:10:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:10:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:10:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2133 transitions. [2022-11-18 21:10:25,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8203846153846154 [2022-11-18 21:10:25,063 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2133 transitions. [2022-11-18 21:10:25,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2133 transitions. [2022-11-18 21:10:25,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:25,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2133 transitions. [2022-11-18 21:10:25,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 266.625) internal successors, (2133), 8 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:25,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:25,070 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 325.0) internal successors, (2925), 9 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:25,070 INFO L175 Difference]: Start difference. First operand has 356 places, 333 transitions, 1087 flow. Second operand 8 states and 2133 transitions. [2022-11-18 21:10:25,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 1366 flow [2022-11-18 21:10:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 352 transitions, 1339 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 21:10:25,083 INFO L231 Difference]: Finished difference. Result has 360 places, 331 transitions, 1073 flow [2022-11-18 21:10:25,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=360, PETRI_TRANSITIONS=331} [2022-11-18 21:10:25,084 INFO L288 CegarLoopForPetriNet]: 273 programPoint places, 87 predicate places. [2022-11-18 21:10:25,084 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 331 transitions, 1073 flow [2022-11-18 21:10:25,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:25,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:25,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:10:25,085 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-18 21:10:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -714306653, now seen corresponding path program 1 times [2022-11-18 21:10:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933395840] [2022-11-18 21:10:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:25,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933395840] [2022-11-18 21:10:25,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933395840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889987171] [2022-11-18 21:10:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:25,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff56c472-edfd-48f3-be3a-ff4f057121c8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:10:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 21:10:26,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:26,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:10:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:10:26,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 21:10:26,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 21:10:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:10:26,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:26,841 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) c_~a2~0.base) c_~a2~0.offset) 9223372039002259456)) is different from false [2022-11-18 21:10:26,886 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_#t~ret16#1.base|) |c_ULTIMATE.start_main_#t~ret16#1.offset|) 9223372039002259456)) is different from false [2022-11-18 21:10:26,963 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2022-11-18 21:10:27,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:10:27,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-18 21:10:27,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:10:27,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 21:10:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-18 21:10:27,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889987171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:27,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:27,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-18 21:10:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654335870] [2022-11-18 21:10:27,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:27,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 21:10:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 21:10:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1276, Unknown=10, NotChecked=222, Total=1640 [2022-11-18 21:10:27,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 325 [2022-11-18 21:10:27,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 331 transitions, 1073 flow. Second operand has 41 states, 41 states have (on average 228.97560975609755) internal successors, (9388), 41 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:27,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:27,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 325 [2022-11-18 21:10:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand