./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/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_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/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_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- 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 19:42:02,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:42:02,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:42:02,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:42:02,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:42:02,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:42:02,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:42:02,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:42:02,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:42:02,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:42:02,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:42:02,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:42:02,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:42:02,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:42:02,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:42:02,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:42:02,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:42:02,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:42:02,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:42:02,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:42:02,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:42:02,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:42:02,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:42:02,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:42:02,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:42:02,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:42:02,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:42:02,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:42:02,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:42:02,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:42:02,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:42:02,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:42:02,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:42:02,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:42:02,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:42:02,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:42:02,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:42:02,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:42:02,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:42:02,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:42:02,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:42:02,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:42:02,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:42:02,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:42:02,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:42:02,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:42:02,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:42:02,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:42:02,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:42:02,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:42:02,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:42:02,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:42:02,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:42:02,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:42:02,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:42:02,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:42:02,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:42:02,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:42:02,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:42:02,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:42:02,624 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:42:02,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:42:02,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:42:02,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:42:02,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:42:02,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:42:02,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:42:02,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:42:02,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:02,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:42:02,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:42:02,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:42:02,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:42:02,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:42:02,628 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:42:02,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:42:02,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:42:02,629 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_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-11-18 19:42:02,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:42:02,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:42:02,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:42:02,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:42:02,880 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:42:02,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-11-18 19:42:02,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/data/83bd19162/0a04a8dbfc1c4d889208acea23a0cf63/FLAGdc06f0a8f [2022-11-18 19:42:03,376 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:42:03,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-11-18 19:42:03,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/data/83bd19162/0a04a8dbfc1c4d889208acea23a0cf63/FLAGdc06f0a8f [2022-11-18 19:42:03,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/data/83bd19162/0a04a8dbfc1c4d889208acea23a0cf63 [2022-11-18 19:42:03,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:42:03,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:42:03,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:03,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:42:03,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:42:03,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a724cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03, skipping insertion in model container [2022-11-18 19:42:03,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:42:03,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:42:03,608 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_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-11-18 19:42:03,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:03,620 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:42:03,640 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_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-11-18 19:42:03,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:03,654 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:42:03,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03 WrapperNode [2022-11-18 19:42:03,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:03,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:03,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:42:03,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:42:03,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,686 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-18 19:42:03,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:03,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:42:03,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:42:03,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:42:03,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:42:03,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:42:03,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:42:03,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:42:03,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (1/1) ... [2022-11-18 19:42:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:03,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:03,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:42:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:42:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-11-18 19:42:03,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-11-18 19:42:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:42:03,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:42:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:42:03,871 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:42:03,873 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:42:04,017 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:42:04,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:42:04,024 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:42:04,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:04 BoogieIcfgContainer [2022-11-18 19:42:04,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:42:04,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:42:04,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:42:04,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:42:04,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:42:03" (1/3) ... [2022-11-18 19:42:04,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8ce343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:04, skipping insertion in model container [2022-11-18 19:42:04,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:03" (2/3) ... [2022-11-18 19:42:04,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8ce343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:04, skipping insertion in model container [2022-11-18 19:42:04,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:04" (3/3) ... [2022-11-18 19:42:04,035 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-11-18 19:42:04,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:42:04,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 19:42:04,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:42:04,111 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;@4ab2ab70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:42:04,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 19:42:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:42:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:42:04,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:04,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:04,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2022-11-18 19:42:04,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:04,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828940572] [2022-11-18 19:42:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:04,408 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 19:42:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:04,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828940572] [2022-11-18 19:42:04,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828940572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:04,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:04,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901318054] [2022-11-18 19:42:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:04,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:04,448 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:04,602 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2022-11-18 19:42:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:42:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:04,613 INFO L225 Difference]: With dead ends: 81 [2022-11-18 19:42:04,620 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 19:42:04,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:04,632 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:04,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 87 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 19:42:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-11-18 19:42:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:42:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-18 19:42:04,697 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2022-11-18 19:42:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:04,698 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-18 19:42:04,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-18 19:42:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:42:04,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:04,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:42:04,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1971768732, now seen corresponding path program 1 times [2022-11-18 19:42:04,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:04,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802878173] [2022-11-18 19:42:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:04,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:04,800 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 19:42:04,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:04,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802878173] [2022-11-18 19:42:04,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802878173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:04,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:04,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45793486] [2022-11-18 19:42:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:04,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:04,804 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:04,892 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-11-18 19:42:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:04,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:42:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:04,894 INFO L225 Difference]: With dead ends: 59 [2022-11-18 19:42:04,895 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 19:42:04,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:04,897 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:04,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 19:42:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-11-18 19:42:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:42:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-18 19:42:04,908 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2022-11-18 19:42:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-18 19:42:04,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-18 19:42:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:42:04,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:04,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:42:04,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash -323955617, now seen corresponding path program 1 times [2022-11-18 19:42:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812745833] [2022-11-18 19:42:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812745833] [2022-11-18 19:42:05,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812745833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:05,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:05,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:05,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717184386] [2022-11-18 19:42:05,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:05,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:05,054 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:05,157 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2022-11-18 19:42:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:42:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:05,159 INFO L225 Difference]: With dead ends: 77 [2022-11-18 19:42:05,159 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 19:42:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:42:05,161 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:05,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 19:42:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-11-18 19:42:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 19:42:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-11-18 19:42:05,178 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2022-11-18 19:42:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:05,178 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-11-18 19:42:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-11-18 19:42:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:42:05,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:05,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:05,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:42:05,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1630133947, now seen corresponding path program 1 times [2022-11-18 19:42:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:05,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359960284] [2022-11-18 19:42:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:05,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359960284] [2022-11-18 19:42:05,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359960284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:05,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:05,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755111374] [2022-11-18 19:42:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:05,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:05,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:05,362 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:42:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:05,472 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-11-18 19:42:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 19:42:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:05,477 INFO L225 Difference]: With dead ends: 121 [2022-11-18 19:42:05,480 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:42:05,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:05,483 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:42:05,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-11-18 19:42:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 19:42:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2022-11-18 19:42:05,501 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2022-11-18 19:42:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:05,501 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2022-11-18 19:42:05,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:42:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2022-11-18 19:42:05,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:42:05,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:05,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:42:05,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1005448143, now seen corresponding path program 1 times [2022-11-18 19:42:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:05,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921933178] [2022-11-18 19:42:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:05,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921933178] [2022-11-18 19:42:05,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921933178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:05,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:05,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:05,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719657445] [2022-11-18 19:42:05,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:05,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:05,572 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:42:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:05,648 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-11-18 19:42:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-18 19:42:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:05,650 INFO L225 Difference]: With dead ends: 102 [2022-11-18 19:42:05,651 INFO L226 Difference]: Without dead ends: 101 [2022-11-18 19:42:05,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:05,652 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:05,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-18 19:42:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2022-11-18 19:42:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 19:42:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2022-11-18 19:42:05,669 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2022-11-18 19:42:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:05,669 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2022-11-18 19:42:05,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:42:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2022-11-18 19:42:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:42:05,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:05,675 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:05,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:42:05,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -385899469, now seen corresponding path program 1 times [2022-11-18 19:42:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:05,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222420898] [2022-11-18 19:42:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:05,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222420898] [2022-11-18 19:42:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222420898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:05,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:05,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888024836] [2022-11-18 19:42:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:05,802 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:05,879 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2022-11-18 19:42:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:42:05,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:42:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:05,882 INFO L225 Difference]: With dead ends: 133 [2022-11-18 19:42:05,882 INFO L226 Difference]: Without dead ends: 59 [2022-11-18 19:42:05,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:42:05,889 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:05,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:42:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-18 19:42:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-11-18 19:42:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.25) internal successors, (50), 41 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 19:42:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-11-18 19:42:05,908 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2022-11-18 19:42:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:05,908 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-11-18 19:42:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:42:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-11-18 19:42:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:42:05,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:05,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:05,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:42:05,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2022-11-18 19:42:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:05,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274603897] [2022-11-18 19:42:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274603897] [2022-11-18 19:42:06,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274603897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:06,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686948115] [2022-11-18 19:42:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:06,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:06,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:06,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:42:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:42:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686948115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:06,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:06,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-18 19:42:06,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266284041] [2022-11-18 19:42:06,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:42:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:42:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:42:06,252 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:06,421 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-18 19:42:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:42:06,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-11-18 19:42:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:06,424 INFO L225 Difference]: With dead ends: 67 [2022-11-18 19:42:06,424 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 19:42:06,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:42:06,427 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:06,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 94 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 19:42:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-11-18 19:42:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:42:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-11-18 19:42:06,452 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2022-11-18 19:42:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:06,453 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-11-18 19:42:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-11-18 19:42:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:42:06,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:06,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:06,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:42:06,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:06,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2022-11-18 19:42:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:06,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450328095] [2022-11-18 19:42:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:06,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:06,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450328095] [2022-11-18 19:42:06,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450328095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:06,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960342145] [2022-11-18 19:42:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:06,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:06,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:06,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:06,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:42:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:06,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:42:06,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:06,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:07,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960342145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:07,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:07,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-18 19:42:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403501716] [2022-11-18 19:42:07,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:07,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:42:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:42:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:42:07,016 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:42:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:07,125 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-11-18 19:42:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:42:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-18 19:42:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:07,126 INFO L225 Difference]: With dead ends: 65 [2022-11-18 19:42:07,126 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:42:07,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:42:07,130 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:07,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 91 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:42:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-11-18 19:42:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:42:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-11-18 19:42:07,145 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2022-11-18 19:42:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:07,145 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-11-18 19:42:07,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:42:07,146 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-11-18 19:42:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:42:07,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:07,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:07,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:07,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:07,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2022-11-18 19:42:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:07,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237789500] [2022-11-18 19:42:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:42:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:07,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237789500] [2022-11-18 19:42:07,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237789500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:07,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799311908] [2022-11-18 19:42:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:07,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:07,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:07,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:07,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:42:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:07,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:42:07,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:07,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799311908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:07,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:07,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2022-11-18 19:42:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58854670] [2022-11-18 19:42:07,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:07,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:42:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:42:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:42:07,709 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:07,887 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-11-18 19:42:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:42:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-18 19:42:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:07,889 INFO L225 Difference]: With dead ends: 94 [2022-11-18 19:42:07,889 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 19:42:07,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:42:07,892 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:07,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 80 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 19:42:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-11-18 19:42:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-18 19:42:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2022-11-18 19:42:07,917 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2022-11-18 19:42:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:07,917 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2022-11-18 19:42:07,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2022-11-18 19:42:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:42:07,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:07,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:07,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:42:08,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:08,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2022-11-18 19:42:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394127238] [2022-11-18 19:42:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:42:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:42:08,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:08,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394127238] [2022-11-18 19:42:08,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394127238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:08,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206175236] [2022-11-18 19:42:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:08,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:08,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:08,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:08,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:42:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:42:08,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:42:08,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:42:08,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206175236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:08,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:08,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2022-11-18 19:42:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714131136] [2022-11-18 19:42:08,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:42:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:42:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:42:08,375 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:08,458 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2022-11-18 19:42:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:42:08,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-18 19:42:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:08,461 INFO L225 Difference]: With dead ends: 97 [2022-11-18 19:42:08,461 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 19:42:08,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:42:08,462 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:08,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:42:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 19:42:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2022-11-18 19:42:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:42:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-18 19:42:08,473 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2022-11-18 19:42:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:08,473 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-18 19:42:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:42:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-18 19:42:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:42:08,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:08,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:08,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 19:42:08,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:42:08,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 360381511, now seen corresponding path program 1 times [2022-11-18 19:42:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881503645] [2022-11-18 19:42:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881503645] [2022-11-18 19:42:08,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881503645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385798876] [2022-11-18 19:42:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:08,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:08,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:08,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:08,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:42:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:42:08,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:09,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:42:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385798876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:09,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:09,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 19:42:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018589082] [2022-11-18 19:42:09,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:42:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:42:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:09,328 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:42:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:09,650 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2022-11-18 19:42:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:42:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2022-11-18 19:42:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:09,652 INFO L225 Difference]: With dead ends: 87 [2022-11-18 19:42:09,652 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 19:42:09,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:42:09,653 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 119 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:09,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 133 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 19:42:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2022-11-18 19:42:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-18 19:42:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-11-18 19:42:09,659 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 29 [2022-11-18 19:42:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:09,660 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-11-18 19:42:09,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:42:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-11-18 19:42:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:42:09,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:09,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:09,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:09,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:09,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 358409096, now seen corresponding path program 1 times [2022-11-18 19:42:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:09,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952657431] [2022-11-18 19:42:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:42:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:42:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952657431] [2022-11-18 19:42:10,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952657431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708592387] [2022-11-18 19:42:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:10,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:10,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:10,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:10,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:42:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:10,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:42:10,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:42:10,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:42:10,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708592387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:10,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:10,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-11-18 19:42:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437235719] [2022-11-18 19:42:10,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:42:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:42:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:10,443 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:42:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:11,004 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2022-11-18 19:42:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:42:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 36 [2022-11-18 19:42:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:11,006 INFO L225 Difference]: With dead ends: 128 [2022-11-18 19:42:11,006 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 19:42:11,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 19:42:11,007 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 134 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:11,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 94 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:42:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 19:42:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 69. [2022-11-18 19:42:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 19:42:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-11-18 19:42:11,014 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 36 [2022-11-18 19:42:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:11,015 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-11-18 19:42:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:42:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-11-18 19:42:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 19:42:11,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:11,016 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:11,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 19:42:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:11,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash -421481335, now seen corresponding path program 2 times [2022-11-18 19:42:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:11,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911355897] [2022-11-18 19:42:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:11,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:42:11,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911355897] [2022-11-18 19:42:11,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911355897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699575273] [2022-11-18 19:42:11,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:11,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:11,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:11,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:42:11,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:11,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:11,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:42:11,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 19:42:11,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:42:12,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699575273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:12,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:12,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-11-18 19:42:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059817036] [2022-11-18 19:42:12,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:12,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:42:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:42:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:42:12,773 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-18 19:42:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:13,602 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2022-11-18 19:42:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:42:13,602 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 51 [2022-11-18 19:42:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:13,603 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:42:13,604 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 19:42:13,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:42:13,605 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 209 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:13,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 176 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:42:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 19:42:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 89. [2022-11-18 19:42:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-18 19:42:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-11-18 19:42:13,613 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 51 [2022-11-18 19:42:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:13,613 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-11-18 19:42:13,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 29 states have internal predecessors, (79), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-18 19:42:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-11-18 19:42:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 19:42:13,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:13,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:13,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:42:13,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1225939680, now seen corresponding path program 2 times [2022-11-18 19:42:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525398593] [2022-11-18 19:42:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:42:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:42:13,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525398593] [2022-11-18 19:42:13,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525398593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748308757] [2022-11-18 19:42:13,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:42:13,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:13,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:13,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:42:14,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:42:14,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:14,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:42:14,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:42:14,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 19:42:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748308757] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:14,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:14,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-18 19:42:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086213935] [2022-11-18 19:42:14,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:42:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:14,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:42:14,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:42:14,388 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-18 19:42:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:14,718 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-11-18 19:42:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:42:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 47 [2022-11-18 19:42:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:14,720 INFO L225 Difference]: With dead ends: 110 [2022-11-18 19:42:14,720 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 19:42:14,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:42:14,721 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 84 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:14,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 173 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:42:14,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 19:42:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-11-18 19:42:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2022-11-18 19:42:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2022-11-18 19:42:14,733 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 47 [2022-11-18 19:42:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:14,733 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2022-11-18 19:42:14,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-18 19:42:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2022-11-18 19:42:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 19:42:14,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:14,738 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:14,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:14,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:42:14,942 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:14,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1983155908, now seen corresponding path program 3 times [2022-11-18 19:42:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889774436] [2022-11-18 19:42:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:42:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-18 19:42:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:15,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889774436] [2022-11-18 19:42:15,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889774436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221624291] [2022-11-18 19:42:15,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:15,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:15,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:15,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:15,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:42:15,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 19:42:15,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:15,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:42:15,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 75 proven. 96 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 19:42:15,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 96 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:42:16,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221624291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:16,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:16,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2022-11-18 19:42:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648375160] [2022-11-18 19:42:16,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:16,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 19:42:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 19:42:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:42:16,868 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-11-18 19:42:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:18,713 INFO L93 Difference]: Finished difference Result 208 states and 237 transitions. [2022-11-18 19:42:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:42:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 81 [2022-11-18 19:42:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:18,716 INFO L225 Difference]: With dead ends: 208 [2022-11-18 19:42:18,717 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 19:42:18,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=988, Invalid=5174, Unknown=0, NotChecked=0, Total=6162 [2022-11-18 19:42:18,720 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 223 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:18,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 240 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:42:18,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 19:42:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 119. [2022-11-18 19:42:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-18 19:42:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 132 transitions. [2022-11-18 19:42:18,731 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 132 transitions. Word has length 81 [2022-11-18 19:42:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 132 transitions. [2022-11-18 19:42:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.9444444444444446) internal successors, (106), 34 states have internal predecessors, (106), 12 states have call successors, (18), 4 states have call predecessors, (18), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2022-11-18 19:42:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 132 transitions. [2022-11-18 19:42:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:42:18,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:18,733 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:18,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:42:18,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 274461965, now seen corresponding path program 3 times [2022-11-18 19:42:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145843655] [2022-11-18 19:42:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 19:42:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:20,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145843655] [2022-11-18 19:42:20,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145843655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:20,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667537090] [2022-11-18 19:42:20,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:42:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:20,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:20,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:42:20,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 19:42:20,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:20,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:42:20,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 19:42:20,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 30 proven. 192 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-18 19:42:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667537090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:25,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:25,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2022-11-18 19:42:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393552683] [2022-11-18 19:42:25,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:25,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 19:42:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 19:42:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 19:42:25,499 INFO L87 Difference]: Start difference. First operand 119 states and 132 transitions. Second operand has 51 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 19:42:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:27,509 INFO L93 Difference]: Finished difference Result 234 states and 270 transitions. [2022-11-18 19:42:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-18 19:42:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 95 [2022-11-18 19:42:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:27,511 INFO L225 Difference]: With dead ends: 234 [2022-11-18 19:42:27,511 INFO L226 Difference]: Without dead ends: 233 [2022-11-18 19:42:27,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2593 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1249, Invalid=8257, Unknown=0, NotChecked=0, Total=9506 [2022-11-18 19:42:27,516 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 586 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:27,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 281 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:42:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-18 19:42:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 159. [2022-11-18 19:42:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 126 states have internal predecessors, (132), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2022-11-18 19:42:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2022-11-18 19:42:27,527 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 95 [2022-11-18 19:42:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:27,527 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2022-11-18 19:42:27,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.46) internal successors, (123), 49 states have internal predecessors, (123), 8 states have call successors, (8), 3 states have call predecessors, (8), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2022-11-18 19:42:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2022-11-18 19:42:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 19:42:27,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:27,529 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 9, 9, 9, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:27,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:42:27,734 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash -846822490, now seen corresponding path program 4 times [2022-11-18 19:42:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099538003] [2022-11-18 19:42:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:42:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 2 proven. 309 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 19:42:29,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:29,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099538003] [2022-11-18 19:42:29,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099538003] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:29,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315168870] [2022-11-18 19:42:29,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:29,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:29,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:29,087 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:29,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:42:29,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:29,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:29,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 19:42:29,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 2 proven. 309 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 19:42:29,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 32 proven. 311 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:42:34,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315168870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:34,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:34,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2022-11-18 19:42:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130109254] [2022-11-18 19:42:34,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:34,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-18 19:42:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-18 19:42:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 19:42:34,513 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 19:42:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:38,163 INFO L93 Difference]: Finished difference Result 315 states and 354 transitions. [2022-11-18 19:42:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 19:42:38,163 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) Word has length 113 [2022-11-18 19:42:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:38,165 INFO L225 Difference]: With dead ends: 315 [2022-11-18 19:42:38,165 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 19:42:38,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 206 SyntacticMatches, 7 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2041, Invalid=14729, Unknown=0, NotChecked=0, Total=16770 [2022-11-18 19:42:38,170 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 913 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:38,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 546 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:42:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 19:42:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2022-11-18 19:42:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 209 states have (on average 1.0334928229665072) internal successors, (216), 208 states have internal predecessors, (216), 9 states have call successors, (9), 6 states have call predecessors, (9), 43 states have return successors, (61), 47 states have call predecessors, (61), 7 states have call successors, (61) [2022-11-18 19:42:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 286 transitions. [2022-11-18 19:42:38,204 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 286 transitions. Word has length 113 [2022-11-18 19:42:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:38,205 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 286 transitions. [2022-11-18 19:42:38,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.6666666666666665) internal successors, (152), 56 states have internal predecessors, (152), 12 states have call successors, (12), 3 states have call predecessors, (12), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 19:42:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 286 transitions. [2022-11-18 19:42:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 19:42:38,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:38,210 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 13, 13, 13, 13, 12, 11, 11, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:38,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:42:38,414 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash 620804644, now seen corresponding path program 5 times [2022-11-18 19:42:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:38,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674092702] [2022-11-18 19:42:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:42:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 19:42:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:39,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 247 proven. 341 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-18 19:42:40,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:40,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674092702] [2022-11-18 19:42:40,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674092702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:40,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709100128] [2022-11-18 19:42:40,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:42:40,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:40,108 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:40,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:42:40,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-11-18 19:42:40,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:40,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:42:40,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 247 proven. 341 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-18 19:42:40,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:42:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 247 proven. 376 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-18 19:42:46,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709100128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:42:46,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:42:46,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 55 [2022-11-18 19:42:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458543216] [2022-11-18 19:42:46,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:42:46,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 19:42:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 19:42:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2699, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 19:42:46,751 INFO L87 Difference]: Start difference. First operand 262 states and 286 transitions. Second operand has 56 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-18 19:42:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:49,104 INFO L93 Difference]: Finished difference Result 372 states and 416 transitions. [2022-11-18 19:42:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 19:42:49,105 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) Word has length 147 [2022-11-18 19:42:49,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:49,107 INFO L225 Difference]: With dead ends: 372 [2022-11-18 19:42:49,108 INFO L226 Difference]: Without dead ends: 353 [2022-11-18 19:42:49,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 279 SyntacticMatches, 10 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3347 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1489, Invalid=10283, Unknown=0, NotChecked=0, Total=11772 [2022-11-18 19:42:49,112 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 350 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:49,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 501 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:42:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-18 19:42:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 209. [2022-11-18 19:42:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 167 states have (on average 1.029940119760479) internal successors, (172), 166 states have internal predecessors, (172), 6 states have call successors, (6), 4 states have call predecessors, (6), 35 states have return successors, (52), 38 states have call predecessors, (52), 5 states have call successors, (52) [2022-11-18 19:42:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2022-11-18 19:42:49,124 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 147 [2022-11-18 19:42:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:49,125 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2022-11-18 19:42:49,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 54 states have internal predecessors, (143), 9 states have call successors, (13), 3 states have call predecessors, (13), 18 states have return successors, (30), 30 states have call predecessors, (30), 9 states have call successors, (30) [2022-11-18 19:42:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2022-11-18 19:42:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-18 19:42:49,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:49,127 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:49,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:49,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:42:49,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:42:49,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1506724331, now seen corresponding path program 4 times [2022-11-18 19:42:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623319602] [2022-11-18 19:42:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:42:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:54,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:42:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-11-18 19:42:55,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:55,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623319602] [2022-11-18 19:42:55,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623319602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:55,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879783781] [2022-11-18 19:42:55,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:42:55,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:55,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:55,343 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:55,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:42:55,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:42:55,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:42:55,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 19:42:55,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 0 proven. 708 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-11-18 19:42:56,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 70 proven. 708 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-18 19:43:32,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879783781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:32,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:43:32,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2022-11-18 19:43:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158459507] [2022-11-18 19:43:32,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-11-18 19:43:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-11-18 19:43:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2022-11-18 19:43:32,640 INFO L87 Difference]: Start difference. First operand 209 states and 230 transitions. Second operand has 91 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 89 states have internal predecessors, (211), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2022-11-18 19:43:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:38,321 INFO L93 Difference]: Finished difference Result 441 states and 508 transitions. [2022-11-18 19:43:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-11-18 19:43:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 89 states have internal predecessors, (211), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 183 [2022-11-18 19:43:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:38,325 INFO L225 Difference]: With dead ends: 441 [2022-11-18 19:43:38,325 INFO L226 Difference]: Without dead ends: 440 [2022-11-18 19:43:38,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 329 SyntacticMatches, 15 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10629 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3701, Invalid=30709, Unknown=0, NotChecked=0, Total=34410 [2022-11-18 19:43:38,330 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 814 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 2870 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:38,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 634 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2870 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:43:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-18 19:43:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 289. [2022-11-18 19:43:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 231 states have (on average 1.0216450216450217) internal successors, (236), 230 states have internal predecessors, (236), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (84), 54 states have call predecessors, (84), 5 states have call successors, (84) [2022-11-18 19:43:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 326 transitions. [2022-11-18 19:43:38,346 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 326 transitions. Word has length 183 [2022-11-18 19:43:38,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:38,347 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 326 transitions. [2022-11-18 19:43:38,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.3444444444444446) internal successors, (211), 89 states have internal predecessors, (211), 8 states have call successors, (8), 3 states have call predecessors, (8), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2022-11-18 19:43:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 326 transitions. [2022-11-18 19:43:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-18 19:43:38,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:38,351 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 19, 19, 19, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:38,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-18 19:43:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:38,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:43:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 318447920, now seen corresponding path program 6 times [2022-11-18 19:43:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:38,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847795708] [2022-11-18 19:43:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:43:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:43:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:43:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 2 proven. 1144 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-11-18 19:43:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:46,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847795708] [2022-11-18 19:43:46,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847795708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:46,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710132920] [2022-11-18 19:43:46,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:43:46,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:46,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:46,004 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:46,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:43:46,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-18 19:43:46,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:46,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-18 19:43:46,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 253 proven. 887 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2022-11-18 19:43:48,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:44:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 253 proven. 967 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-18 19:44:42,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710132920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:44:42,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:44:42,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2022-11-18 19:44:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167313258] [2022-11-18 19:44:42,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:44:42,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-11-18 19:44:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:42,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-11-18 19:44:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2022-11-18 19:44:42,473 INFO L87 Difference]: Start difference. First operand 289 states and 326 transitions. Second operand has 107 states, 106 states have (on average 2.452830188679245) internal successors, (260), 104 states have internal predecessors, (260), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2022-11-18 19:44:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:44:57,574 INFO L93 Difference]: Finished difference Result 734 states and 843 transitions. [2022-11-18 19:44:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-11-18 19:44:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.452830188679245) internal successors, (260), 104 states have internal predecessors, (260), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) Word has length 223 [2022-11-18 19:44:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:44:57,578 INFO L225 Difference]: With dead ends: 734 [2022-11-18 19:44:57,579 INFO L226 Difference]: Without dead ends: 661 [2022-11-18 19:44:57,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 408 SyntacticMatches, 16 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28783 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=9164, Invalid=82342, Unknown=0, NotChecked=0, Total=91506 [2022-11-18 19:44:57,587 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1059 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 6896 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 7480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 6896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:44:57,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1640 Invalid, 7480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 6896 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 19:44:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-11-18 19:44:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 379. [2022-11-18 19:44:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 303 states have (on average 1.0165016501650166) internal successors, (308), 302 states have internal predecessors, (308), 6 states have call successors, (6), 4 states have call predecessors, (6), 69 states have return successors, (102), 72 states have call predecessors, (102), 5 states have call successors, (102) [2022-11-18 19:44:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 416 transitions. [2022-11-18 19:44:57,607 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 416 transitions. Word has length 223 [2022-11-18 19:44:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:44:57,607 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 416 transitions. [2022-11-18 19:44:57,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.452830188679245) internal successors, (260), 104 states have internal predecessors, (260), 12 states have call successors, (15), 4 states have call predecessors, (15), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2022-11-18 19:44:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 416 transitions. [2022-11-18 19:44:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-18 19:44:57,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:44:57,615 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 32, 32, 32, 31, 31, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:57,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:44:57,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:44:57,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:44:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1853485767, now seen corresponding path program 5 times [2022-11-18 19:44:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:57,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404996245] [2022-11-18 19:44:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 19:44:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:07,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:45:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5917 backedges. 0 proven. 3078 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2022-11-18 19:45:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:27,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404996245] [2022-11-18 19:45:27,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404996245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:45:27,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967937873] [2022-11-18 19:45:27,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:45:27,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:45:27,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:27,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:45:27,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:45:28,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2022-11-18 19:45:28,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:45:28,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 134 conjunts are in the unsatisfiable core [2022-11-18 19:45:28,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:45:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5917 backedges. 0 proven. 3078 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2022-11-18 19:45:31,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5917 backedges. 150 proven. 3078 refuted. 0 times theorem prover too weak. 2689 trivial. 0 not checked. [2022-11-18 19:52:41,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967937873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:41,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:41,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 70] total 170 [2022-11-18 19:52:41,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826523311] [2022-11-18 19:52:41,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:41,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-11-18 19:52:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-11-18 19:52:41,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3118, Invalid=25952, Unknown=0, NotChecked=0, Total=29070 [2022-11-18 19:52:41,192 INFO L87 Difference]: Start difference. First operand 379 states and 416 transitions. Second operand has 171 states, 170 states have (on average 2.276470588235294) internal successors, (387), 169 states have internal predecessors, (387), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2022-11-18 19:53:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:00,058 INFO L93 Difference]: Finished difference Result 851 states and 982 transitions. [2022-11-18 19:53:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-11-18 19:53:00,059 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 2.276470588235294) internal successors, (387), 169 states have internal predecessors, (387), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) Word has length 371 [2022-11-18 19:53:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:00,063 INFO L225 Difference]: With dead ends: 851 [2022-11-18 19:53:00,064 INFO L226 Difference]: Without dead ends: 850 [2022-11-18 19:53:00,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 675 SyntacticMatches, 33 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43349 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=12253, Invalid=118429, Unknown=0, NotChecked=0, Total=130682 [2022-11-18 19:53:00,075 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1235 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 8962 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 9388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 8962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:00,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1926 Invalid, 9388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 8962 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 19:53:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-18 19:53:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 539. [2022-11-18 19:53:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 431 states have (on average 1.011600928074246) internal successors, (436), 430 states have internal predecessors, (436), 6 states have call successors, (6), 4 states have call predecessors, (6), 101 states have return successors, (166), 104 states have call predecessors, (166), 5 states have call successors, (166) [2022-11-18 19:53:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 608 transitions. [2022-11-18 19:53:00,101 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 608 transitions. Word has length 371 [2022-11-18 19:53:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:00,102 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 608 transitions. [2022-11-18 19:53:00,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 2.276470588235294) internal successors, (387), 169 states have internal predecessors, (387), 8 states have call successors, (10), 3 states have call predecessors, (10), 63 states have return successors, (96), 96 states have call predecessors, (96), 6 states have call successors, (96) [2022-11-18 19:53:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 608 transitions. [2022-11-18 19:53:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-18 19:53:00,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:00,111 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 38, 37, 37, 37, 37, 37, 37, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:00,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-18 19:53:00,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:00,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 19:53:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1023656766, now seen corresponding path program 7 times [2022-11-18 19:53:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132177265] [2022-11-18 19:53:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:53:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 19:53:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:09,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 19:53:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7589 backedges. 2 proven. 3907 refuted. 0 times theorem prover too weak. 3680 trivial. 0 not checked. [2022-11-18 19:53:36,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:36,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132177265] [2022-11-18 19:53:36,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132177265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:36,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203374019] [2022-11-18 19:53:36,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:53:36,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:36,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:36,414 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:36,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c26f2fd5-5b0f-46f7-8c35-9f710d76a0dd/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:53:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:40,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 150 conjunts are in the unsatisfiable core [2022-11-18 19:53:40,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7589 backedges. 2 proven. 3907 refuted. 0 times theorem prover too weak. 3680 trivial. 0 not checked. [2022-11-18 19:53:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates...