./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- 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-6b4ec56 [2022-11-20 10:44:47,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:44:47,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:44:47,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:44:47,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:44:47,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:44:47,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:44:47,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:44:47,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:44:47,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:44:47,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:44:47,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:44:47,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:44:47,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:44:47,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:44:47,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:44:47,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:44:47,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:44:47,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:44:47,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:44:47,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:44:47,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:44:47,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:44:47,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:44:47,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:44:47,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:44:47,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:44:47,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:44:47,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:44:47,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:44:47,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:44:47,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:44:47,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:44:47,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:44:47,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:44:47,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:44:47,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:44:47,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:44:47,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:44:47,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:44:47,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:44:47,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 10:44:47,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:44:47,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:44:47,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:44:47,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:44:47,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:44:47,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:44:47,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:44:47,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:44:47,653 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:44:47,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:44:47,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:44:47,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:44:47,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:44:47,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:44:47,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:44:47,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:44:47,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:44:47,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:44:47,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:44:47,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:44:47,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:44:47,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:44:47,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:44:47,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:47,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:44:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:44:47,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:44:47,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:44:47,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:44:47,659 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:44:47,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:44:47,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:44:47,660 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_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-11-20 10:44:48,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:44:48,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:44:48,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:44:48,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:44:48,039 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:44:48,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-11-20 10:44:51,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:44:51,322 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:44:51,323 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/sv-benchmarks/c/termination-numeric/twisted.c [2022-11-20 10:44:51,327 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/data/53b17517b/44c3fd3036d64c18bcf31629e3479408/FLAG710e5fcdd [2022-11-20 10:44:51,342 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/data/53b17517b/44c3fd3036d64c18bcf31629e3479408 [2022-11-20 10:44:51,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:44:51,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:44:51,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:51,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:44:51,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:44:51,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cab0774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51, skipping insertion in model container [2022-11-20 10:44:51,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:44:51,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:44:51,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:51,556 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:44:51,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:44:51,580 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:44:51,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51 WrapperNode [2022-11-20 10:44:51,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:44:51,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:51,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:44:51,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:44:51,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,608 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-11-20 10:44:51,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:44:51,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:44:51,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:44:51,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:44:51,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:44:51,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:44:51,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:44:51,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:44:51,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (1/1) ... [2022-11-20 10:44:51,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:44:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:51,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:44:51,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:44:51,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:44:51,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:44:51,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:44:51,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:44:52,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:44:52,043 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:44:52,043 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:44:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:52 BoogieIcfgContainer [2022-11-20 10:44:52,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:44:52,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:44:52,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:44:52,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:44:52,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:44:51" (1/3) ... [2022-11-20 10:44:52,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1e64bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:52, skipping insertion in model container [2022-11-20 10:44:52,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:44:51" (2/3) ... [2022-11-20 10:44:52,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1e64bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:44:52, skipping insertion in model container [2022-11-20 10:44:52,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:44:52" (3/3) ... [2022-11-20 10:44:52,055 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-11-20 10:44:52,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:44:52,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 10:44:52,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:44:52,160 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;@7e7977ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:44:52,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 10:44:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:44:52,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:52,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:44:52,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash 28694852, now seen corresponding path program 1 times [2022-11-20 10:44:52,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967916249] [2022-11-20 10:44:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:52,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:52,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967916249] [2022-11-20 10:44:52,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967916249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:52,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:52,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:52,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394043571] [2022-11-20 10:44:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:52,596 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:52,748 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2022-11-20 10:44:52,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:44:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:44:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:52,760 INFO L225 Difference]: With dead ends: 66 [2022-11-20 10:44:52,761 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 10:44:52,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:52,768 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:52,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 10:44:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-11-20 10:44:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-20 10:44:52,806 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 5 [2022-11-20 10:44:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:52,807 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-20 10:44:52,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-20 10:44:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 10:44:52,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:52,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 10:44:52,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:44:52,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:52,810 INFO L85 PathProgramCache]: Analyzing trace with hash 889540457, now seen corresponding path program 1 times [2022-11-20 10:44:52,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:52,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126024679] [2022-11-20 10:44:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126024679] [2022-11-20 10:44:52,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126024679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:52,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:52,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749230801] [2022-11-20 10:44:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:52,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:52,861 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:52,902 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-20 10:44:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:44:52,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-20 10:44:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:52,904 INFO L225 Difference]: With dead ends: 28 [2022-11-20 10:44:52,904 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:44:52,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:52,906 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:52,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:44:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 10:44:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-20 10:44:52,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 6 [2022-11-20 10:44:52,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:52,915 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-20 10:44:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-20 10:44:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:44:52,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:52,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:52,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:44:52,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903811, now seen corresponding path program 1 times [2022-11-20 10:44:52,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:52,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512152608] [2022-11-20 10:44:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:52,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:52,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512152608] [2022-11-20 10:44:52,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512152608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:52,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:52,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:44:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800080364] [2022-11-20 10:44:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:44:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:44:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:52,967 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:53,017 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-20 10:44:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:44:53,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:44:53,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:53,019 INFO L225 Difference]: With dead ends: 40 [2022-11-20 10:44:53,019 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 10:44:53,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:53,021 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:53,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 10:44:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-20 10:44:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-11-20 10:44:53,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 7 [2022-11-20 10:44:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,045 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-20 10:44:53,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-11-20 10:44:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:44:53,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:44:53,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:53,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903861, now seen corresponding path program 1 times [2022-11-20 10:44:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:53,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133307787] [2022-11-20 10:44:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:53,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133307787] [2022-11-20 10:44:53,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133307787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:53,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:53,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901043555] [2022-11-20 10:44:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:53,140 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:53,199 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-11-20 10:44:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:44:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:44:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:53,200 INFO L225 Difference]: With dead ends: 50 [2022-11-20 10:44:53,201 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 10:44:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:53,203 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:53,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 10:44:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2022-11-20 10:44:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-11-20 10:44:53,215 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 7 [2022-11-20 10:44:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,216 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-11-20 10:44:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-11-20 10:44:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:44:53,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:44:53,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 148443370, now seen corresponding path program 1 times [2022-11-20 10:44:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:53,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250380392] [2022-11-20 10:44:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:53,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250380392] [2022-11-20 10:44:53,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250380392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:53,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:53,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:44:53,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465571111] [2022-11-20 10:44:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:53,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:44:53,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:44:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:53,311 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:53,351 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-11-20 10:44:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:44:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:44:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:53,357 INFO L225 Difference]: With dead ends: 46 [2022-11-20 10:44:53,357 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 10:44:53,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:53,362 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:53,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 10:44:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-11-20 10:44:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2022-11-20 10:44:53,372 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 8 [2022-11-20 10:44:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,372 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2022-11-20 10:44:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2022-11-20 10:44:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:44:53,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:44:53,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 148444908, now seen corresponding path program 1 times [2022-11-20 10:44:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:53,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020150396] [2022-11-20 10:44:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:53,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020150396] [2022-11-20 10:44:53,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020150396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:53,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:53,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767917699] [2022-11-20 10:44:53,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:44:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:44:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:44:53,459 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:53,516 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2022-11-20 10:44:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:44:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:44:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:53,520 INFO L225 Difference]: With dead ends: 40 [2022-11-20 10:44:53,520 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 10:44:53,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:53,522 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:53,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 10:44:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-20 10:44:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.457142857142857) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2022-11-20 10:44:53,531 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 8 [2022-11-20 10:44:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,532 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2022-11-20 10:44:53,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2022-11-20 10:44:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:44:53,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:44:53,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 351585609, now seen corresponding path program 1 times [2022-11-20 10:44:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:53,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146909635] [2022-11-20 10:44:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146909635] [2022-11-20 10:44:53,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146909635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459104632] [2022-11-20 10:44:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:53,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:53,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:53,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:53,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:44:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:44:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459104632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:53,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:53,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 10:44:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151201403] [2022-11-20 10:44:53,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:53,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:44:53,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:44:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:44:53,808 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:53,959 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2022-11-20 10:44:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:44:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:44:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:53,961 INFO L225 Difference]: With dead ends: 113 [2022-11-20 10:44:53,961 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 10:44:53,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:44:53,963 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 112 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:53,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 10:44:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-11-20 10:44:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.457142857142857) internal successors, (102), 73 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2022-11-20 10:44:53,981 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 9 [2022-11-20 10:44:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:53,982 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2022-11-20 10:44:53,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2022-11-20 10:44:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:44:53,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:53,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:54,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:44:54,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:54,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1985673441, now seen corresponding path program 1 times [2022-11-20 10:44:54,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:54,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771068439] [2022-11-20 10:44:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:54,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771068439] [2022-11-20 10:44:54,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771068439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:54,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:44:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408118442] [2022-11-20 10:44:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:44:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:44:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:54,271 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:54,331 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2022-11-20 10:44:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:44:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 10:44:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:54,334 INFO L225 Difference]: With dead ends: 80 [2022-11-20 10:44:54,334 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 10:44:54,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:44:54,335 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:54,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 10:44:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-11-20 10:44:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 74 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2022-11-20 10:44:54,348 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 10 [2022-11-20 10:44:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:54,348 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2022-11-20 10:44:54,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2022-11-20 10:44:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:44:54,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:54,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:44:54,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993400, now seen corresponding path program 1 times [2022-11-20 10:44:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:54,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548310638] [2022-11-20 10:44:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548310638] [2022-11-20 10:44:54,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548310638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123919439] [2022-11-20 10:44:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:54,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:54,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:44:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:44:54,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:54,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:54,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123919439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:54,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:54,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 10:44:54,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729837538] [2022-11-20 10:44:54,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:44:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:44:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:44:54,720 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:54,942 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-11-20 10:44:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:44:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:44:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:54,944 INFO L225 Difference]: With dead ends: 120 [2022-11-20 10:44:54,945 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 10:44:54,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:44:54,948 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:54,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 54 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 10:44:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2022-11-20 10:44:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 92 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2022-11-20 10:44:54,976 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 11 [2022-11-20 10:44:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:54,976 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2022-11-20 10:44:54,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2022-11-20 10:44:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:44:54,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:54,977 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:54,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:44:55,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 10:44:55,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993350, now seen corresponding path program 1 times [2022-11-20 10:44:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368107525] [2022-11-20 10:44:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368107525] [2022-11-20 10:44:55,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368107525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895457839] [2022-11-20 10:44:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:55,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:55,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:55,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:44:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:44:55,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895457839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:55,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:55,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 10:44:55,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612902593] [2022-11-20 10:44:55,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:55,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:44:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:44:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:44:55,356 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:55,480 INFO L93 Difference]: Finished difference Result 254 states and 355 transitions. [2022-11-20 10:44:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:44:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:44:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:55,482 INFO L225 Difference]: With dead ends: 254 [2022-11-20 10:44:55,482 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 10:44:55,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:44:55,483 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:55,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 87 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 10:44:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2022-11-20 10:44:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.4394618834080717) internal successors, (321), 226 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2022-11-20 10:44:55,510 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 11 [2022-11-20 10:44:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:55,510 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2022-11-20 10:44:55,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2022-11-20 10:44:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:44:55,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:55,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:55,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:55,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:55,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1426334450, now seen corresponding path program 1 times [2022-11-20 10:44:55,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:55,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714670742] [2022-11-20 10:44:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:55,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714670742] [2022-11-20 10:44:55,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714670742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:55,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:44:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589016656] [2022-11-20 10:44:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:44:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:44:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:44:55,772 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:55,864 INFO L93 Difference]: Finished difference Result 231 states and 325 transitions. [2022-11-20 10:44:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:44:55,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:44:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:55,866 INFO L225 Difference]: With dead ends: 231 [2022-11-20 10:44:55,866 INFO L226 Difference]: Without dead ends: 228 [2022-11-20 10:44:55,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:44:55,867 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:55,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-20 10:44:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-11-20 10:44:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.4330357142857142) internal successors, (321), 227 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2022-11-20 10:44:55,888 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 11 [2022-11-20 10:44:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:55,888 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2022-11-20 10:44:55,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2022-11-20 10:44:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:44:55,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:55,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:55,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:44:55,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash 930844933, now seen corresponding path program 1 times [2022-11-20 10:44:55,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:55,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853014336] [2022-11-20 10:44:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:55,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:55,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853014336] [2022-11-20 10:44:55,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853014336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:55,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874495093] [2022-11-20 10:44:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:55,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:55,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:55,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:55,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:44:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:55,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:44:55,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:56,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:44:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874495093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:56,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:44:56,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 10:44:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030898729] [2022-11-20 10:44:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:56,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:44:56,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:44:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:44:56,065 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:56,168 INFO L93 Difference]: Finished difference Result 256 states and 354 transitions. [2022-11-20 10:44:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:44:56,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 10:44:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:56,170 INFO L225 Difference]: With dead ends: 256 [2022-11-20 10:44:56,171 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 10:44:56,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:44:56,172 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:56,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 33 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 10:44:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 242. [2022-11-20 10:44:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.415966386554622) internal successors, (337), 241 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 337 transitions. [2022-11-20 10:44:56,217 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 337 transitions. Word has length 12 [2022-11-20 10:44:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:56,217 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 337 transitions. [2022-11-20 10:44:56,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 337 transitions. [2022-11-20 10:44:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:44:56,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:56,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:56,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:56,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:44:56,431 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:56,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:56,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1922968006, now seen corresponding path program 1 times [2022-11-20 10:44:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:56,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044015489] [2022-11-20 10:44:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:56,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044015489] [2022-11-20 10:44:56,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044015489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078117128] [2022-11-20 10:44:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:56,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:56,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:56,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:56,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:44:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:56,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:44:56,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:56,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:56,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078117128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:56,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:56,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 10:44:56,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630676495] [2022-11-20 10:44:56,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:56,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:44:56,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:44:56,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:44:56,802 INFO L87 Difference]: Start difference. First operand 242 states and 337 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:56,912 INFO L93 Difference]: Finished difference Result 253 states and 348 transitions. [2022-11-20 10:44:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:44:56,912 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 10:44:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:56,914 INFO L225 Difference]: With dead ends: 253 [2022-11-20 10:44:56,914 INFO L226 Difference]: Without dead ends: 250 [2022-11-20 10:44:56,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:44:56,915 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:56,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 55 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-20 10:44:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2022-11-20 10:44:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.4075630252100841) internal successors, (335), 241 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 335 transitions. [2022-11-20 10:44:56,933 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 335 transitions. Word has length 14 [2022-11-20 10:44:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:56,933 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 335 transitions. [2022-11-20 10:44:56,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 335 transitions. [2022-11-20 10:44:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:44:56,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:56,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:56,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:57,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:44:57,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1772254812, now seen corresponding path program 1 times [2022-11-20 10:44:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:57,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840426914] [2022-11-20 10:44:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:57,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840426914] [2022-11-20 10:44:57,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840426914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222196988] [2022-11-20 10:44:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:57,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:57,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:57,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:57,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:44:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:57,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:44:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:57,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:57,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222196988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:57,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:57,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 10:44:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106306641] [2022-11-20 10:44:57,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:44:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:44:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:44:57,450 INFO L87 Difference]: Start difference. First operand 242 states and 335 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:57,784 INFO L93 Difference]: Finished difference Result 313 states and 426 transitions. [2022-11-20 10:44:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:44:57,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 10:44:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:57,787 INFO L225 Difference]: With dead ends: 313 [2022-11-20 10:44:57,788 INFO L226 Difference]: Without dead ends: 311 [2022-11-20 10:44:57,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:44:57,789 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 147 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:57,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 46 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:44:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-20 10:44:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 265. [2022-11-20 10:44:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.4099616858237547) internal successors, (368), 264 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 368 transitions. [2022-11-20 10:44:57,826 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 368 transitions. Word has length 14 [2022-11-20 10:44:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:57,828 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 368 transitions. [2022-11-20 10:44:57,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 368 transitions. [2022-11-20 10:44:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:44:57,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:57,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:57,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:58,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:44:58,036 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 894675753, now seen corresponding path program 1 times [2022-11-20 10:44:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:58,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310450450] [2022-11-20 10:44:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:58,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:58,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310450450] [2022-11-20 10:44:58,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310450450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:58,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749480298] [2022-11-20 10:44:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:58,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:58,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:58,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:44:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:58,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:44:58,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:58,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:44:58,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749480298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:58,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:44:58,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-20 10:44:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914589274] [2022-11-20 10:44:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:58,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:44:58,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:44:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:44:58,282 INFO L87 Difference]: Start difference. First operand 265 states and 368 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:58,494 INFO L93 Difference]: Finished difference Result 430 states and 602 transitions. [2022-11-20 10:44:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:44:58,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 10:44:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:58,497 INFO L225 Difference]: With dead ends: 430 [2022-11-20 10:44:58,497 INFO L226 Difference]: Without dead ends: 427 [2022-11-20 10:44:58,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:44:58,500 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:58,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:44:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-20 10:44:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2022-11-20 10:44:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 419 states have (on average 1.4128878281622912) internal successors, (592), 422 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 592 transitions. [2022-11-20 10:44:58,533 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 592 transitions. Word has length 15 [2022-11-20 10:44:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:58,533 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 592 transitions. [2022-11-20 10:44:58,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 592 transitions. [2022-11-20 10:44:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:44:58,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:58,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:58,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:44:58,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash -220195594, now seen corresponding path program 1 times [2022-11-20 10:44:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881442818] [2022-11-20 10:44:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:58,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881442818] [2022-11-20 10:44:58,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881442818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:44:58,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:44:58,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:44:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367097703] [2022-11-20 10:44:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:44:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:44:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:44:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:58,762 INFO L87 Difference]: Start difference. First operand 423 states and 592 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:58,818 INFO L93 Difference]: Finished difference Result 710 states and 993 transitions. [2022-11-20 10:44:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:44:58,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 10:44:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:58,820 INFO L225 Difference]: With dead ends: 710 [2022-11-20 10:44:58,820 INFO L226 Difference]: Without dead ends: 386 [2022-11-20 10:44:58,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:44:58,826 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:58,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:44:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-20 10:44:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 292. [2022-11-20 10:44:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 1.356401384083045) internal successors, (392), 291 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 392 transitions. [2022-11-20 10:44:58,859 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 392 transitions. Word has length 18 [2022-11-20 10:44:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:58,860 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 392 transitions. [2022-11-20 10:44:58,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:44:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 392 transitions. [2022-11-20 10:44:58,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:44:58,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:58,862 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:58,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:44:58,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:44:58,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1129109338, now seen corresponding path program 1 times [2022-11-20 10:44:58,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:58,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500262206] [2022-11-20 10:44:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:58,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:59,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:59,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500262206] [2022-11-20 10:44:59,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500262206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:59,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209815581] [2022-11-20 10:44:59,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:59,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:59,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:59,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:59,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:44:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:59,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:44:59,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:59,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:44:59,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209815581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:44:59,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:44:59,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 10:44:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735944838] [2022-11-20 10:44:59,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 10:44:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 10:44:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:44:59,415 INFO L87 Difference]: Start difference. First operand 292 states and 392 transitions. Second operand has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:00,043 INFO L93 Difference]: Finished difference Result 503 states and 661 transitions. [2022-11-20 10:45:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:45:00,044 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 10:45:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:00,046 INFO L225 Difference]: With dead ends: 503 [2022-11-20 10:45:00,046 INFO L226 Difference]: Without dead ends: 494 [2022-11-20 10:45:00,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=626, Invalid=2130, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 10:45:00,049 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 221 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:00,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 63 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:45:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-20 10:45:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 317. [2022-11-20 10:45:00,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 314 states have (on average 1.3821656050955413) internal successors, (434), 316 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 434 transitions. [2022-11-20 10:45:00,081 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 434 transitions. Word has length 22 [2022-11-20 10:45:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:00,082 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 434 transitions. [2022-11-20 10:45:00,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 434 transitions. [2022-11-20 10:45:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:45:00,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:00,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:00,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:00,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:45:00,288 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -198939945, now seen corresponding path program 2 times [2022-11-20 10:45:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:00,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657050435] [2022-11-20 10:45:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:00,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657050435] [2022-11-20 10:45:00,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657050435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:00,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278893906] [2022-11-20 10:45:00,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:00,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:00,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:00,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:45:00,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:00,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:00,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:45:00,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:00,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:00,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278893906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:00,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:00,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 10:45:00,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847306970] [2022-11-20 10:45:00,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:00,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 10:45:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 10:45:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:45:00,830 INFO L87 Difference]: Start difference. First operand 317 states and 434 transitions. Second operand has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:01,362 INFO L93 Difference]: Finished difference Result 423 states and 558 transitions. [2022-11-20 10:45:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:45:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 10:45:01,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:01,365 INFO L225 Difference]: With dead ends: 423 [2022-11-20 10:45:01,365 INFO L226 Difference]: Without dead ends: 415 [2022-11-20 10:45:01,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=651, Invalid=1605, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 10:45:01,366 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 174 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:01,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 91 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:45:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-20 10:45:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 400. [2022-11-20 10:45:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 397 states have (on average 1.345088161209068) internal successors, (534), 399 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 534 transitions. [2022-11-20 10:45:01,413 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 534 transitions. Word has length 23 [2022-11-20 10:45:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:01,415 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 534 transitions. [2022-11-20 10:45:01,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 534 transitions. [2022-11-20 10:45:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:45:01,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:01,417 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:01,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:01,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:45:01,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:01,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:01,623 INFO L85 PathProgramCache]: Analyzing trace with hash -198939895, now seen corresponding path program 2 times [2022-11-20 10:45:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:01,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5940983] [2022-11-20 10:45:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:01,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:01,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5940983] [2022-11-20 10:45:01,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5940983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:01,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772108216] [2022-11-20 10:45:01,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:01,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:01,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:01,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:01,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:45:01,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:45:01,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:01,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:45:01,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 10:45:01,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 10:45:01,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772108216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:01,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:01,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2022-11-20 10:45:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643323932] [2022-11-20 10:45:01,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:45:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:45:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:45:01,923 INFO L87 Difference]: Start difference. First operand 400 states and 534 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:02,134 INFO L93 Difference]: Finished difference Result 472 states and 624 transitions. [2022-11-20 10:45:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:45:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 10:45:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:02,137 INFO L225 Difference]: With dead ends: 472 [2022-11-20 10:45:02,137 INFO L226 Difference]: Without dead ends: 471 [2022-11-20 10:45:02,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:45:02,139 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 157 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:02,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 119 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:45:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-20 10:45:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 254. [2022-11-20 10:45:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.3015873015873016) internal successors, (328), 253 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 328 transitions. [2022-11-20 10:45:02,186 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 328 transitions. Word has length 23 [2022-11-20 10:45:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:02,186 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 328 transitions. [2022-11-20 10:45:02,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 328 transitions. [2022-11-20 10:45:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 10:45:02,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:02,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:02,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:02,396 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2131972659, now seen corresponding path program 2 times [2022-11-20 10:45:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:02,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192381761] [2022-11-20 10:45:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192381761] [2022-11-20 10:45:02,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192381761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612821999] [2022-11-20 10:45:02,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:02,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:02,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:02,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:02,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:45:02,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:45:02,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:02,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:45:02,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 10:45:02,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:02,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612821999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:02,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:02,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-11-20 10:45:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472519438] [2022-11-20 10:45:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:45:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:45:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:45:02,692 INFO L87 Difference]: Start difference. First operand 254 states and 328 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:02,801 INFO L93 Difference]: Finished difference Result 408 states and 519 transitions. [2022-11-20 10:45:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:45:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 10:45:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:02,802 INFO L225 Difference]: With dead ends: 408 [2022-11-20 10:45:02,802 INFO L226 Difference]: Without dead ends: 228 [2022-11-20 10:45:02,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:45:02,804 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:02,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:45:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-20 10:45:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-11-20 10:45:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.2252252252252251) internal successors, (272), 223 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 272 transitions. [2022-11-20 10:45:02,853 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 272 transitions. Word has length 26 [2022-11-20 10:45:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:02,854 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 272 transitions. [2022-11-20 10:45:02,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 272 transitions. [2022-11-20 10:45:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 10:45:02,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:02,855 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:02,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:03,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:03,060 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 173293468, now seen corresponding path program 1 times [2022-11-20 10:45:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:03,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295179738] [2022-11-20 10:45:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:03,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:03,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:03,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295179738] [2022-11-20 10:45:03,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295179738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:03,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002459441] [2022-11-20 10:45:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:03,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:03,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:03,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:03,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:45:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:03,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:45:03,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:03,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:03,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002459441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:03,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:03,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-20 10:45:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550374315] [2022-11-20 10:45:03,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:03,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 10:45:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:03,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 10:45:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 10:45:03,772 INFO L87 Difference]: Start difference. First operand 224 states and 272 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:04,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:04,383 INFO L93 Difference]: Finished difference Result 325 states and 391 transitions. [2022-11-20 10:45:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:45:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 10:45:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:04,386 INFO L225 Difference]: With dead ends: 325 [2022-11-20 10:45:04,386 INFO L226 Difference]: Without dead ends: 319 [2022-11-20 10:45:04,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=799, Invalid=2281, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 10:45:04,388 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 261 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:04,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 82 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:45:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-20 10:45:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 270. [2022-11-20 10:45:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 268 states have (on average 1.205223880597015) internal successors, (323), 269 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2022-11-20 10:45:04,448 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 27 [2022-11-20 10:45:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:04,449 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2022-11-20 10:45:04,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2022-11-20 10:45:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 10:45:04,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:04,450 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:04,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 10:45:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:04,655 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1060574047, now seen corresponding path program 1 times [2022-11-20 10:45:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533907405] [2022-11-20 10:45:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:04,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533907405] [2022-11-20 10:45:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533907405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477773616] [2022-11-20 10:45:04,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:04,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:04,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:04,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:45:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:04,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:45:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:04,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:05,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477773616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:05,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:05,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-11-20 10:45:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568072420] [2022-11-20 10:45:05,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:05,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:45:05,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:05,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:45:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:45:05,060 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:05,403 INFO L93 Difference]: Finished difference Result 564 states and 711 transitions. [2022-11-20 10:45:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:45:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 10:45:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:05,406 INFO L225 Difference]: With dead ends: 564 [2022-11-20 10:45:05,407 INFO L226 Difference]: Without dead ends: 563 [2022-11-20 10:45:05,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:45:05,410 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:05,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 95 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:45:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-20 10:45:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 337. [2022-11-20 10:45:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.2447761194029852) internal successors, (417), 336 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 417 transitions. [2022-11-20 10:45:05,492 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 417 transitions. Word has length 27 [2022-11-20 10:45:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:05,493 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 417 transitions. [2022-11-20 10:45:05,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 417 transitions. [2022-11-20 10:45:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 10:45:05,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:05,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:05,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:05,701 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:05,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash -617200904, now seen corresponding path program 1 times [2022-11-20 10:45:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:05,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465601253] [2022-11-20 10:45:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:05,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465601253] [2022-11-20 10:45:05,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465601253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:05,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39323246] [2022-11-20 10:45:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:05,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:05,919 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:05,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:45:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:05,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:45:05,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:06,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39323246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:06,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:06,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2022-11-20 10:45:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105256537] [2022-11-20 10:45:06,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:06,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:45:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:45:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 10:45:06,539 INFO L87 Difference]: Start difference. First operand 337 states and 417 transitions. Second operand has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:07,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:07,768 INFO L93 Difference]: Finished difference Result 660 states and 822 transitions. [2022-11-20 10:45:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-20 10:45:07,768 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 10:45:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:07,771 INFO L225 Difference]: With dead ends: 660 [2022-11-20 10:45:07,771 INFO L226 Difference]: Without dead ends: 649 [2022-11-20 10:45:07,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1394, Invalid=5086, Unknown=0, NotChecked=0, Total=6480 [2022-11-20 10:45:07,774 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 349 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:07,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 92 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:45:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-11-20 10:45:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 429. [2022-11-20 10:45:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 427 states have (on average 1.2505854800936769) internal successors, (534), 428 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 534 transitions. [2022-11-20 10:45:07,878 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 534 transitions. Word has length 32 [2022-11-20 10:45:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:07,879 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 534 transitions. [2022-11-20 10:45:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 534 transitions. [2022-11-20 10:45:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 10:45:07,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:07,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:45:07,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 10:45:08,086 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash 819223618, now seen corresponding path program 2 times [2022-11-20 10:45:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:08,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660287239] [2022-11-20 10:45:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660287239] [2022-11-20 10:45:08,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660287239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:08,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262523218] [2022-11-20 10:45:08,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:08,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:08,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:08,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:08,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:45:08,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:08,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:08,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:45:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:08,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:09,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262523218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:09,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:09,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2022-11-20 10:45:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701221578] [2022-11-20 10:45:09,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-20 10:45:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-20 10:45:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=2210, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 10:45:09,254 INFO L87 Difference]: Start difference. First operand 429 states and 534 transitions. Second operand has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:10,884 INFO L93 Difference]: Finished difference Result 993 states and 1260 transitions. [2022-11-20 10:45:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 10:45:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-20 10:45:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:10,888 INFO L225 Difference]: With dead ends: 993 [2022-11-20 10:45:10,889 INFO L226 Difference]: Without dead ends: 981 [2022-11-20 10:45:10,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3643 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2275, Invalid=8437, Unknown=0, NotChecked=0, Total=10712 [2022-11-20 10:45:10,892 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 650 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:10,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 92 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:45:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-20 10:45:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 561. [2022-11-20 10:45:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 559 states have (on average 1.2826475849731664) internal successors, (717), 560 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 717 transitions. [2022-11-20 10:45:11,022 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 717 transitions. Word has length 42 [2022-11-20 10:45:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 717 transitions. [2022-11-20 10:45:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 717 transitions. [2022-11-20 10:45:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 10:45:11,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:11,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:11,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:11,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 10:45:11,230 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash 155546162, now seen corresponding path program 1 times [2022-11-20 10:45:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:11,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721181708] [2022-11-20 10:45:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:11,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721181708] [2022-11-20 10:45:11,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721181708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:11,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895813998] [2022-11-20 10:45:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:11,575 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:11,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:45:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:45:11,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:12,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:12,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895813998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:12,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:12,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2022-11-20 10:45:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848590676] [2022-11-20 10:45:12,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-20 10:45:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-20 10:45:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 10:45:12,579 INFO L87 Difference]: Start difference. First operand 561 states and 717 transitions. Second operand has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:14,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:14,635 INFO L93 Difference]: Finished difference Result 1452 states and 1822 transitions. [2022-11-20 10:45:14,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-20 10:45:14,636 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-20 10:45:14,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:14,641 INFO L225 Difference]: With dead ends: 1452 [2022-11-20 10:45:14,641 INFO L226 Difference]: Without dead ends: 1439 [2022-11-20 10:45:14,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2978, Invalid=10828, Unknown=0, NotChecked=0, Total=13806 [2022-11-20 10:45:14,645 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 685 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:14,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 107 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:45:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2022-11-20 10:45:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1002. [2022-11-20 10:45:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1000 states have (on average 1.284) internal successors, (1284), 1001 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1284 transitions. [2022-11-20 10:45:14,978 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1284 transitions. Word has length 45 [2022-11-20 10:45:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:14,978 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1284 transitions. [2022-11-20 10:45:14,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1284 transitions. [2022-11-20 10:45:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 10:45:14,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:14,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-20 10:45:14,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 10:45:15,187 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 40208802, now seen corresponding path program 3 times [2022-11-20 10:45:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:15,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907901305] [2022-11-20 10:45:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907901305] [2022-11-20 10:45:15,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907901305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:15,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774196124] [2022-11-20 10:45:15,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:45:15,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:15,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:15,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:15,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:45:15,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:45:15,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:15,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:45:15,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-20 10:45:15,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:45:15,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774196124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:45:15,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:45:15,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [22] total 24 [2022-11-20 10:45:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323295790] [2022-11-20 10:45:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:45:15,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:45:15,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:45:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:45:15,722 INFO L87 Difference]: Start difference. First operand 1002 states and 1284 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:15,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:15,934 INFO L93 Difference]: Finished difference Result 1290 states and 1648 transitions. [2022-11-20 10:45:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:45:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-20 10:45:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:15,937 INFO L225 Difference]: With dead ends: 1290 [2022-11-20 10:45:15,937 INFO L226 Difference]: Without dead ends: 637 [2022-11-20 10:45:15,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:45:15,939 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:15,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:45:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-11-20 10:45:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 533. [2022-11-20 10:45:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 1.2090395480225988) internal successors, (642), 532 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 642 transitions. [2022-11-20 10:45:16,117 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 642 transitions. Word has length 50 [2022-11-20 10:45:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:16,117 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 642 transitions. [2022-11-20 10:45:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 642 transitions. [2022-11-20 10:45:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 10:45:16,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:16,119 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:16,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:16,324 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1442158919, now seen corresponding path program 2 times [2022-11-20 10:45:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627469416] [2022-11-20 10:45:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:16,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:16,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627469416] [2022-11-20 10:45:16,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627469416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:16,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782049021] [2022-11-20 10:45:16,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:16,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:16,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 10:45:16,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:16,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:45:16,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:17,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:17,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782049021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:17,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:17,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-20 10:45:17,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296603405] [2022-11-20 10:45:17,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:17,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-20 10:45:17,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-20 10:45:17,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=3338, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 10:45:17,842 INFO L87 Difference]: Start difference. First operand 533 states and 642 transitions. Second operand has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:20,253 INFO L93 Difference]: Finished difference Result 1505 states and 1828 transitions. [2022-11-20 10:45:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-20 10:45:20,253 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-20 10:45:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:20,260 INFO L225 Difference]: With dead ends: 1505 [2022-11-20 10:45:20,260 INFO L226 Difference]: Without dead ends: 1489 [2022-11-20 10:45:20,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5788 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3331, Invalid=12925, Unknown=0, NotChecked=0, Total=16256 [2022-11-20 10:45:20,263 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 634 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:20,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 100 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:45:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-20 10:45:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 724. [2022-11-20 10:45:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 722 states have (on average 1.2437673130193905) internal successors, (898), 723 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 898 transitions. [2022-11-20 10:45:20,445 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 898 transitions. Word has length 51 [2022-11-20 10:45:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:20,446 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 898 transitions. [2022-11-20 10:45:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 898 transitions. [2022-11-20 10:45:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:45:20,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:20,448 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:20,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-20 10:45:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 10:45:20,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:20,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2011601919, now seen corresponding path program 3 times [2022-11-20 10:45:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:20,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053567976] [2022-11-20 10:45:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:21,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053567976] [2022-11-20 10:45:21,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053567976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:21,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132379878] [2022-11-20 10:45:21,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:45:21,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:21,208 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:21,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 10:45:21,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 10:45:21,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:21,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:45:21,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 20 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 10:45:21,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 10:45:22,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132379878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:22,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:22,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13, 13] total 50 [2022-11-20 10:45:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578646595] [2022-11-20 10:45:22,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:22,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 10:45:22,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 10:45:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2161, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 10:45:22,237 INFO L87 Difference]: Start difference. First operand 724 states and 898 transitions. Second operand has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:27,111 INFO L93 Difference]: Finished difference Result 1693 states and 2036 transitions. [2022-11-20 10:45:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-11-20 10:45:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-20 10:45:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:27,115 INFO L225 Difference]: With dead ends: 1693 [2022-11-20 10:45:27,115 INFO L226 Difference]: Without dead ends: 1037 [2022-11-20 10:45:27,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2759, Invalid=24301, Unknown=0, NotChecked=0, Total=27060 [2022-11-20 10:45:27,120 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1064 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 369 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:45:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-11-20 10:45:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 592. [2022-11-20 10:45:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 590 states have (on average 1.2169491525423728) internal successors, (718), 591 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 718 transitions. [2022-11-20 10:45:27,359 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 718 transitions. Word has length 57 [2022-11-20 10:45:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:27,359 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 718 transitions. [2022-11-20 10:45:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 718 transitions. [2022-11-20 10:45:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:45:27,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:27,361 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:45:27,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 10:45:27,566 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2012170120, now seen corresponding path program 4 times [2022-11-20 10:45:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:27,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818284299] [2022-11-20 10:45:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:28,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:28,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818284299] [2022-11-20 10:45:28,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818284299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:28,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483227534] [2022-11-20 10:45:28,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:45:28,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:28,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:28,143 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:28,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 10:45:28,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:45:28,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:28,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:45:28,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:28,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:29,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483227534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:29,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:29,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 82 [2022-11-20 10:45:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064340972] [2022-11-20 10:45:29,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-20 10:45:29,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-20 10:45:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1276, Invalid=5530, Unknown=0, NotChecked=0, Total=6806 [2022-11-20 10:45:29,782 INFO L87 Difference]: Start difference. First operand 592 states and 718 transitions. Second operand has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:32,360 INFO L93 Difference]: Finished difference Result 1429 states and 1676 transitions. [2022-11-20 10:45:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-20 10:45:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-20 10:45:32,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:32,364 INFO L225 Difference]: With dead ends: 1429 [2022-11-20 10:45:32,364 INFO L226 Difference]: Without dead ends: 1417 [2022-11-20 10:45:32,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7788 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4696, Invalid=16766, Unknown=0, NotChecked=0, Total=21462 [2022-11-20 10:45:32,367 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 785 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 137 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:45:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-11-20 10:45:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 880. [2022-11-20 10:45:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.2232346241457859) internal successors, (1074), 879 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1074 transitions. [2022-11-20 10:45:32,618 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1074 transitions. Word has length 63 [2022-11-20 10:45:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:32,618 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1074 transitions. [2022-11-20 10:45:32,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1074 transitions. [2022-11-20 10:45:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 10:45:32,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:32,621 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-20 10:45:32,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:32,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 10:45:32,826 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1937639662, now seen corresponding path program 2 times [2022-11-20 10:45:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:32,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616254121] [2022-11-20 10:45:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:33,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616254121] [2022-11-20 10:45:33,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616254121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:33,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196003278] [2022-11-20 10:45:33,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:33,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:33,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:33,250 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:33,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 10:45:33,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:45:33,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:33,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:45:33,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 10:45:33,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-20 10:45:33,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196003278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:33,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:33,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 25 [2022-11-20 10:45:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615014414] [2022-11-20 10:45:33,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:33,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:45:33,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:45:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:45:33,520 INFO L87 Difference]: Start difference. First operand 880 states and 1074 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:34,623 INFO L93 Difference]: Finished difference Result 1693 states and 1985 transitions. [2022-11-20 10:45:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:45:34,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-20 10:45:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:34,632 INFO L225 Difference]: With dead ends: 1693 [2022-11-20 10:45:34,632 INFO L226 Difference]: Without dead ends: 1692 [2022-11-20 10:45:34,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 10:45:34,633 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 189 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:34,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 143 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:45:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-11-20 10:45:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 712. [2022-11-20 10:45:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.20112517580872) internal successors, (854), 711 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 854 transitions. [2022-11-20 10:45:34,872 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 854 transitions. Word has length 69 [2022-11-20 10:45:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:34,873 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 854 transitions. [2022-11-20 10:45:34,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 854 transitions. [2022-11-20 10:45:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:45:34,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:34,875 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-20 10:45:34,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:35,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:35,080 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:35,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash 448781649, now seen corresponding path program 1 times [2022-11-20 10:45:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761540869] [2022-11-20 10:45:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:35,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761540869] [2022-11-20 10:45:35,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761540869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:35,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180537241] [2022-11-20 10:45:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:35,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:35,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:35,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:45:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:45:35,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:36,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:37,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180537241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:37,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:37,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2022-11-20 10:45:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900967610] [2022-11-20 10:45:37,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:37,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-20 10:45:37,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-20 10:45:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1728, Invalid=7202, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 10:45:37,777 INFO L87 Difference]: Start difference. First operand 712 states and 854 transitions. Second operand has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:41,539 INFO L93 Difference]: Finished difference Result 1908 states and 2281 transitions. [2022-11-20 10:45:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-11-20 10:45:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-20 10:45:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:41,545 INFO L225 Difference]: With dead ends: 1908 [2022-11-20 10:45:41,545 INFO L226 Difference]: Without dead ends: 1879 [2022-11-20 10:45:41,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11834 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6339, Invalid=25523, Unknown=0, NotChecked=0, Total=31862 [2022-11-20 10:45:41,548 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 904 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:41,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 149 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:45:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-20 10:45:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 757. [2022-11-20 10:45:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 1.2103174603174602) internal successors, (915), 756 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 915 transitions. [2022-11-20 10:45:41,826 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 915 transitions. Word has length 74 [2022-11-20 10:45:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:41,826 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 915 transitions. [2022-11-20 10:45:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 915 transitions. [2022-11-20 10:45:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 10:45:41,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:41,829 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 6, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2022-11-20 10:45:41,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:42,034 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1955030167, now seen corresponding path program 5 times [2022-11-20 10:45:42,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:42,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156318108] [2022-11-20 10:45:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:42,897 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156318108] [2022-11-20 10:45:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156318108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035050001] [2022-11-20 10:45:42,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:45:42,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:42,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:42,899 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:42,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 10:45:42,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 10:45:42,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:42,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:45:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 181 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-20 10:45:43,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 181 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-20 10:45:43,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035050001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:43,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:43,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 6, 6] total 41 [2022-11-20 10:45:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062262678] [2022-11-20 10:45:43,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:45:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:45:43,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 10:45:43,163 INFO L87 Difference]: Start difference. First operand 757 states and 915 transitions. Second operand has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:45,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:45,379 INFO L93 Difference]: Finished difference Result 1043 states and 1229 transitions. [2022-11-20 10:45:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-20 10:45:45,380 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-20 10:45:45,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:45,382 INFO L225 Difference]: With dead ends: 1043 [2022-11-20 10:45:45,382 INFO L226 Difference]: Without dead ends: 463 [2022-11-20 10:45:45,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1976, Invalid=9154, Unknown=0, NotChecked=0, Total=11130 [2022-11-20 10:45:45,384 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 441 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:45,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 122 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:45:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-20 10:45:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 322. [2022-11-20 10:45:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.0591900311526479) internal successors, (340), 321 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2022-11-20 10:45:45,545 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 82 [2022-11-20 10:45:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:45,545 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2022-11-20 10:45:45,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2022-11-20 10:45:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 10:45:45,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:45,546 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:45:45,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 10:45:45,746 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1088474210, now seen corresponding path program 2 times [2022-11-20 10:45:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:45,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791855834] [2022-11-20 10:45:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:46,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:46,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791855834] [2022-11-20 10:45:46,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791855834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:46,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921539230] [2022-11-20 10:45:46,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:46,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:46,712 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:46,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 10:45:46,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:46,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:46,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 10:45:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:49,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921539230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:49,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:49,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 118 [2022-11-20 10:45:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266162264] [2022-11-20 10:45:49,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-20 10:45:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-20 10:45:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3096, Invalid=10946, Unknown=0, NotChecked=0, Total=14042 [2022-11-20 10:45:49,517 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:52,943 INFO L93 Difference]: Finished difference Result 850 states and 906 transitions. [2022-11-20 10:45:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-20 10:45:52,943 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-20 10:45:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:52,945 INFO L225 Difference]: With dead ends: 850 [2022-11-20 10:45:52,945 INFO L226 Difference]: Without dead ends: 828 [2022-11-20 10:45:52,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14213 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=9752, Invalid=28468, Unknown=0, NotChecked=0, Total=38220 [2022-11-20 10:45:52,949 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 988 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:52,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 174 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:45:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-20 10:45:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 538. [2022-11-20 10:45:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.0353817504655494) internal successors, (556), 537 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 556 transitions. [2022-11-20 10:45:53,289 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 556 transitions. Word has length 83 [2022-11-20 10:45:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:53,289 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 556 transitions. [2022-11-20 10:45:53,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:45:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 556 transitions. [2022-11-20 10:45:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 10:45:53,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:53,290 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-11-20 10:45:53,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:45:53,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-20 10:45:53,491 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:45:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -319776093, now seen corresponding path program 6 times [2022-11-20 10:45:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604825604] [2022-11-20 10:45:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:45:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:45:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604825604] [2022-11-20 10:45:54,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604825604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:45:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691015711] [2022-11-20 10:45:54,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:45:54,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:54,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:54,421 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:54,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 10:45:54,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-20 10:45:54,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:54,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 10:45:54,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:45:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:55,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:45:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:45:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691015711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:45:56,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:45:56,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2022-11-20 10:45:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950521886] [2022-11-20 10:45:56,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:45:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-11-20 10:45:56,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:45:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-11-20 10:45:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2310, Invalid=10346, Unknown=0, NotChecked=0, Total=12656 [2022-11-20 10:45:56,955 INFO L87 Difference]: Start difference. First operand 538 states and 556 transitions. Second operand has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:00,959 INFO L93 Difference]: Finished difference Result 1218 states and 1259 transitions. [2022-11-20 10:46:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-20 10:46:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-20 10:46:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:00,962 INFO L225 Difference]: With dead ends: 1218 [2022-11-20 10:46:00,962 INFO L226 Difference]: Without dead ends: 1204 [2022-11-20 10:46:00,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14383 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8431, Invalid=29789, Unknown=0, NotChecked=0, Total=38220 [2022-11-20 10:46:00,964 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 994 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:00,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 144 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:46:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-11-20 10:46:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 538. [2022-11-20 10:46:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.0353817504655494) internal successors, (556), 537 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 556 transitions. [2022-11-20 10:46:01,381 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 556 transitions. Word has length 85 [2022-11-20 10:46:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 556 transitions. [2022-11-20 10:46:01,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 556 transitions. [2022-11-20 10:46:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 10:46:01,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:01,383 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-20 10:46:01,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-20 10:46:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:01,583 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:46:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1145678342, now seen corresponding path program 1 times [2022-11-20 10:46:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:01,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902097020] [2022-11-20 10:46:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:02,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:02,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902097020] [2022-11-20 10:46:02,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902097020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:02,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675155556] [2022-11-20 10:46:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:02,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:02,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:02,810 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:02,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 10:46:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:02,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 10:46:02,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:04,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:06,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675155556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:06,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:46:06,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 130 [2022-11-20 10:46:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386515268] [2022-11-20 10:46:06,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:06,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-11-20 10:46:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-11-20 10:46:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3132, Invalid=13898, Unknown=0, NotChecked=0, Total=17030 [2022-11-20 10:46:06,052 INFO L87 Difference]: Start difference. First operand 538 states and 556 transitions. Second operand has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:11,742 INFO L93 Difference]: Finished difference Result 1165 states and 1226 transitions. [2022-11-20 10:46:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-11-20 10:46:11,743 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-20 10:46:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:11,747 INFO L225 Difference]: With dead ends: 1165 [2022-11-20 10:46:11,747 INFO L226 Difference]: Without dead ends: 1142 [2022-11-20 10:46:11,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22521 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11677, Invalid=46645, Unknown=0, NotChecked=0, Total=58322 [2022-11-20 10:46:11,750 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1176 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:11,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 165 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:46:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-11-20 10:46:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 648. [2022-11-20 10:46:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.052550231839258) internal successors, (681), 647 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 681 transitions. [2022-11-20 10:46:12,179 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 681 transitions. Word has length 105 [2022-11-20 10:46:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 681 transitions. [2022-11-20 10:46:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 681 transitions. [2022-11-20 10:46:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 10:46:12,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:12,181 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 12, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-11-20 10:46:12,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 10:46:12,382 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:46:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1299356552, now seen corresponding path program 7 times [2022-11-20 10:46:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:12,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199972021] [2022-11-20 10:46:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199972021] [2022-11-20 10:46:13,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199972021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755868812] [2022-11-20 10:46:13,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:46:13,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:13,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:13,884 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:13,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 10:46:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 10:46:13,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:15,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:18,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755868812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:18,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:46:18,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 154 [2022-11-20 10:46:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895922606] [2022-11-20 10:46:18,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:18,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-11-20 10:46:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-11-20 10:46:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4308, Invalid=19562, Unknown=0, NotChecked=0, Total=23870 [2022-11-20 10:46:18,083 INFO L87 Difference]: Start difference. First operand 648 states and 681 transitions. Second operand has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:24,852 INFO L93 Difference]: Finished difference Result 1562 states and 1629 transitions. [2022-11-20 10:46:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-11-20 10:46:24,852 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-20 10:46:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:24,856 INFO L225 Difference]: With dead ends: 1562 [2022-11-20 10:46:24,856 INFO L226 Difference]: Without dead ends: 1542 [2022-11-20 10:46:24,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27974 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=15988, Invalid=56642, Unknown=0, NotChecked=0, Total=72630 [2022-11-20 10:46:24,860 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1387 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:24,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 215 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:46:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-11-20 10:46:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 648. [2022-11-20 10:46:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.052550231839258) internal successors, (681), 647 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 681 transitions. [2022-11-20 10:46:25,509 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 681 transitions. Word has length 115 [2022-11-20 10:46:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:25,510 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 681 transitions. [2022-11-20 10:46:25,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 681 transitions. [2022-11-20 10:46:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-20 10:46:25,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:25,512 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 16, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2022-11-20 10:46:25,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:25,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 10:46:25,718 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:46:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:25,719 INFO L85 PathProgramCache]: Analyzing trace with hash 879423149, now seen corresponding path program 8 times [2022-11-20 10:46:25,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:25,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180661097] [2022-11-20 10:46:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:25,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180661097] [2022-11-20 10:46:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180661097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492390220] [2022-11-20 10:46:28,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:46:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:28,291 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:28,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 10:46:28,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:46:28,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:46:28,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 10:46:28,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:31,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:34,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492390220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:34,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:46:34,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 196 [2022-11-20 10:46:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160533509] [2022-11-20 10:46:34,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:34,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-11-20 10:46:34,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-11-20 10:46:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6930, Invalid=31682, Unknown=0, NotChecked=0, Total=38612 [2022-11-20 10:46:34,880 INFO L87 Difference]: Start difference. First operand 648 states and 681 transitions. Second operand has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:46:45,337 INFO L93 Difference]: Finished difference Result 1769 states and 1846 transitions. [2022-11-20 10:46:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-11-20 10:46:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-11-20 10:46:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:46:45,340 INFO L225 Difference]: With dead ends: 1769 [2022-11-20 10:46:45,340 INFO L226 Difference]: Without dead ends: 1744 [2022-11-20 10:46:45,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46023 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=25950, Invalid=92042, Unknown=0, NotChecked=0, Total=117992 [2022-11-20 10:46:45,346 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2121 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:46:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 250 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:46:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-20 10:46:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 718. [2022-11-20 10:46:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 1.0474198047419805) internal successors, (751), 717 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 751 transitions. [2022-11-20 10:46:46,107 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 751 transitions. Word has length 145 [2022-11-20 10:46:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:46:46,108 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 751 transitions. [2022-11-20 10:46:46,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:46:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 751 transitions. [2022-11-20 10:46:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:46:46,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:46:46,110 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 21, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-11-20 10:46:46,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:46:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 10:46:46,311 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:46:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:46:46,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1621560041, now seen corresponding path program 9 times [2022-11-20 10:46:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:46:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526902877] [2022-11-20 10:46:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:46:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:46:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:46:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:46:49,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526902877] [2022-11-20 10:46:49,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526902877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:46:49,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233493470] [2022-11-20 10:46:49,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:46:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:46:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:46:49,824 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:46:49,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 10:46:49,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-11-20 10:46:49,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:46:49,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 10:46:49,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:46:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:53,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:46:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:46:59,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233493470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:46:59,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:46:59,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 244 [2022-11-20 10:46:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137201157] [2022-11-20 10:46:59,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:46:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 245 states [2022-11-20 10:46:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:46:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2022-11-20 10:46:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10722, Invalid=49058, Unknown=0, NotChecked=0, Total=59780 [2022-11-20 10:46:59,786 INFO L87 Difference]: Start difference. First operand 718 states and 751 transitions. Second operand has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:15,141 INFO L93 Difference]: Finished difference Result 1797 states and 1886 transitions. [2022-11-20 10:47:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-11-20 10:47:15,141 INFO L78 Accepts]: Start accepts. Automaton has has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-20 10:47:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:15,144 INFO L225 Difference]: With dead ends: 1797 [2022-11-20 10:47:15,144 INFO L226 Difference]: Without dead ends: 1766 [2022-11-20 10:47:15,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71966 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=40293, Invalid=142463, Unknown=0, NotChecked=0, Total=182756 [2022-11-20 10:47:15,152 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2352 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:15,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 303 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:47:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-11-20 10:47:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 850. [2022-11-20 10:47:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.0400471142520613) internal successors, (883), 849 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 883 transitions. [2022-11-20 10:47:16,024 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 883 transitions. Word has length 179 [2022-11-20 10:47:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:16,025 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 883 transitions. [2022-11-20 10:47:16,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 883 transitions. [2022-11-20 10:47:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-20 10:47:16,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:16,026 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 15, 15, 15, 14, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1] [2022-11-20 10:47:16,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 10:47:16,227 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:47:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1477703569, now seen corresponding path program 10 times [2022-11-20 10:47:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570489070] [2022-11-20 10:47:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:20,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570489070] [2022-11-20 10:47:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570489070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831704452] [2022-11-20 10:47:20,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:47:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:20,247 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 10:47:20,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:47:20,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:20,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-20 10:47:20,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:24,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831704452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:31,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:31,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 256 [2022-11-20 10:47:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739522704] [2022-11-20 10:47:31,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2022-11-20 10:47:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2022-11-20 10:47:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11638, Invalid=54154, Unknown=0, NotChecked=0, Total=65792 [2022-11-20 10:47:31,150 INFO L87 Difference]: Start difference. First operand 850 states and 883 transitions. Second operand has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:50,547 INFO L93 Difference]: Finished difference Result 1888 states and 2003 transitions. [2022-11-20 10:47:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2022-11-20 10:47:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2022-11-20 10:47:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:50,552 INFO L225 Difference]: With dead ends: 1888 [2022-11-20 10:47:50,552 INFO L226 Difference]: Without dead ends: 1844 [2022-11-20 10:47:50,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90363 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=44727, Invalid=181373, Unknown=0, NotChecked=0, Total=226100 [2022-11-20 10:47:50,563 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2714 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:50,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 334 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 10:47:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-20 10:47:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1035. [2022-11-20 10:47:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.0570599613152805) internal successors, (1093), 1034 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1093 transitions. [2022-11-20 10:47:51,547 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1093 transitions. Word has length 201 [2022-11-20 10:47:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:51,548 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1093 transitions. [2022-11-20 10:47:51,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1093 transitions. [2022-11-20 10:47:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-20 10:47:51,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:51,550 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 27, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2022-11-20 10:47:51,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:51,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 10:47:51,750 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:47:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:51,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1850806214, now seen corresponding path program 11 times [2022-11-20 10:47:51,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:51,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384989459] [2022-11-20 10:47:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:51,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:56,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:56,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384989459] [2022-11-20 10:47:56,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384989459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:56,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090196713] [2022-11-20 10:47:56,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:47:56,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:56,487 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:56,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 10:47:56,630 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-11-20 10:47:56,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-20 10:47:56,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:02,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:10,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090196713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:10,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:10,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 298 [2022-11-20 10:48:10,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022689552] [2022-11-20 10:48:10,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:10,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 299 states [2022-11-20 10:48:10,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 299 interpolants. [2022-11-20 10:48:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16020, Invalid=73082, Unknown=0, NotChecked=0, Total=89102 [2022-11-20 10:48:10,692 INFO L87 Difference]: Start difference. First operand 1035 states and 1093 transitions. Second operand has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:34,257 INFO L93 Difference]: Finished difference Result 2842 states and 2970 transitions. [2022-11-20 10:48:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2022-11-20 10:48:34,258 INFO L78 Accepts]: Start accepts. Automaton has has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-11-20 10:48:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:34,267 INFO L225 Difference]: With dead ends: 2842 [2022-11-20 10:48:34,267 INFO L226 Difference]: Without dead ends: 2804 [2022-11-20 10:48:34,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 520 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107780 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=60211, Invalid=211751, Unknown=0, NotChecked=0, Total=271962 [2022-11-20 10:48:34,279 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3129 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3129 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:34,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3129 Valid, 359 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 10:48:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2022-11-20 10:48:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1189. [2022-11-20 10:48:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1188 states have (on average 1.0496632996632997) internal successors, (1247), 1188 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1247 transitions. [2022-11-20 10:48:35,309 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1247 transitions. Word has length 217 [2022-11-20 10:48:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:35,309 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1247 transitions. [2022-11-20 10:48:35,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1247 transitions. [2022-11-20 10:48:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-20 10:48:35,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:35,314 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 34, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2022-11-20 10:48:35,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:35,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 10:48:35,520 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:48:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -549109702, now seen corresponding path program 12 times [2022-11-20 10:48:35,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:35,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102900289] [2022-11-20 10:48:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:35,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:42,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102900289] [2022-11-20 10:48:42,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102900289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750205895] [2022-11-20 10:48:42,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:48:42,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:42,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:42,531 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:42,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 10:48:42,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2022-11-20 10:48:42,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:42,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-20 10:48:42,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:50,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:02,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750205895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:02,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:02,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120, 120] total 358 [2022-11-20 10:49:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068461845] [2022-11-20 10:49:02,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:02,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 359 states [2022-11-20 10:49:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:02,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 359 interpolants. [2022-11-20 10:49:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23208, Invalid=105314, Unknown=0, NotChecked=0, Total=128522 [2022-11-20 10:49:02,901 INFO L87 Difference]: Start difference. First operand 1189 states and 1247 transitions. Second operand has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:39,600 INFO L93 Difference]: Finished difference Result 3092 states and 3236 transitions. [2022-11-20 10:49:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-11-20 10:49:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-11-20 10:49:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:39,606 INFO L225 Difference]: With dead ends: 3092 [2022-11-20 10:49:39,606 INFO L226 Difference]: Without dead ends: 3046 [2022-11-20 10:49:39,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155834 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=87051, Invalid=304199, Unknown=0, NotChecked=0, Total=391250 [2022-11-20 10:49:39,624 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4204 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:39,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 418 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:49:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-11-20 10:49:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1365. [2022-11-20 10:49:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.0432551319648093) internal successors, (1423), 1364 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1423 transitions. [2022-11-20 10:49:40,992 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1423 transitions. Word has length 259 [2022-11-20 10:49:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:40,993 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1423 transitions. [2022-11-20 10:49:40,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1423 transitions. [2022-11-20 10:49:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-20 10:49:40,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:40,996 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 29, 29, 29, 18, 18, 18, 17, 17, 12, 1, 1, 1, 1, 1] [2022-11-20 10:49:41,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:41,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:41,203 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:49:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1478483941, now seen corresponding path program 13 times [2022-11-20 10:49:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749232635] [2022-11-20 10:49:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749232635] [2022-11-20 10:49:49,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749232635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:49,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888857905] [2022-11-20 10:49:49,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:49:49,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:49,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:49,771 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:49,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 10:49:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:49,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 131 conjunts are in the unsatisfiable core [2022-11-20 10:49:49,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:59,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:13,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888857905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:13,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:13,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 388 [2022-11-20 10:50:13,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804477570] [2022-11-20 10:50:13,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:13,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 389 states [2022-11-20 10:50:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 389 interpolants. [2022-11-20 10:50:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25810, Invalid=125122, Unknown=0, NotChecked=0, Total=150932 [2022-11-20 10:50:13,110 INFO L87 Difference]: Start difference. First operand 1365 states and 1423 transitions. Second operand has 389 states, 388 states have (on average 2.2912371134020617) internal successors, (889), 389 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:01,752 INFO L93 Difference]: Finished difference Result 3086 states and 3236 transitions. [2022-11-20 10:51:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 454 states. [2022-11-20 10:51:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 389 states, 388 states have (on average 2.2912371134020617) internal successors, (889), 389 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2022-11-20 10:51:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:01,761 INFO L225 Difference]: With dead ends: 3086 [2022-11-20 10:51:01,761 INFO L226 Difference]: Without dead ends: 3037 [2022-11-20 10:51:01,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 710 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203108 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=102126, Invalid=404106, Unknown=0, NotChecked=0, Total=506232 [2022-11-20 10:51:01,802 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4304 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:01,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 470 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 10:51:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-11-20 10:51:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 1485. [2022-11-20 10:51:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 1.0505390835579516) internal successors, (1559), 1484 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1559 transitions. [2022-11-20 10:51:03,465 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1559 transitions. Word has length 297 [2022-11-20 10:51:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:03,465 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 1559 transitions. [2022-11-20 10:51:03,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 389 states, 388 states have (on average 2.2912371134020617) internal successors, (889), 389 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1559 transitions. [2022-11-20 10:51:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-20 10:51:03,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:03,469 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 51, 19, 19, 19, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2022-11-20 10:51:03,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:03,674 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:51:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -931960032, now seen corresponding path program 14 times [2022-11-20 10:51:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:03,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928192414] [2022-11-20 10:51:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7933 backedges. 0 proven. 7933 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928192414] [2022-11-20 10:51:17,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928192414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416449801] [2022-11-20 10:51:17,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:51:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:17,383 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:17,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-20 10:51:17,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:51:17,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:51:17,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-20 10:51:17,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7933 backedges. 0 proven. 7933 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7933 backedges. 0 proven. 7933 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:54,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416449801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:51:54,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:51:54,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160, 160] total 478 [2022-11-20 10:51:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696907206] [2022-11-20 10:51:54,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 479 states [2022-11-20 10:51:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:54,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 479 interpolants. [2022-11-20 10:51:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42240, Invalid=186722, Unknown=0, NotChecked=0, Total=228962 [2022-11-20 10:51:54,177 INFO L87 Difference]: Start difference. First operand 1485 states and 1559 transitions. Second operand has 479 states, 478 states have (on average 2.1359832635983262) internal successors, (1021), 479 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:17,378 INFO L93 Difference]: Finished difference Result 4562 states and 4758 transitions. [2022-11-20 10:53:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 512 states. [2022-11-20 10:53:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 479 states, 478 states have (on average 2.1359832635983262) internal successors, (1021), 479 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2022-11-20 10:53:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:17,385 INFO L225 Difference]: With dead ends: 4562 [2022-11-20 10:53:17,385 INFO L226 Difference]: Without dead ends: 4498 [2022-11-20 10:53:17,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 828 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275328 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=155892, Invalid=532178, Unknown=0, NotChecked=0, Total=688070 [2022-11-20 10:53:17,413 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5138 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5138 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:17,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5138 Valid, 555 Invalid, 3347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [522 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:53:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2022-11-20 10:53:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 1881. [2022-11-20 10:53:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 1.0398936170212767) internal successors, (1955), 1880 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 1955 transitions. [2022-11-20 10:53:19,347 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 1955 transitions. Word has length 341 [2022-11-20 10:53:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:19,347 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 1955 transitions. [2022-11-20 10:53:19,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 479 states, 478 states have (on average 2.1359832635983262) internal successors, (1021), 479 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:53:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 1955 transitions. [2022-11-20 10:53:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-11-20 10:53:19,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:19,353 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 39, 39, 39, 28, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2022-11-20 10:53:19,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:19,558 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:53:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1890673943, now seen corresponding path program 15 times [2022-11-20 10:53:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464047196] [2022-11-20 10:53:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7754 backedges. 0 proven. 7754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:36,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:36,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464047196] [2022-11-20 10:53:36,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464047196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:36,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623733780] [2022-11-20 10:53:36,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:53:36,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:36,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:36,323 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:36,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-20 10:53:36,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-11-20 10:53:36,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:36,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 175 conjunts are in the unsatisfiable core [2022-11-20 10:53:36,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7754 backedges. 0 proven. 7754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:53,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7754 backedges. 0 proven. 7754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:18,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623733780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:18,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:18,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174, 174] total 520 [2022-11-20 10:54:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668309374] [2022-11-20 10:54:18,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 521 states [2022-11-20 10:54:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 521 interpolants. [2022-11-20 10:54:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46062, Invalid=224858, Unknown=0, NotChecked=0, Total=270920 [2022-11-20 10:54:18,930 INFO L87 Difference]: Start difference. First operand 1881 states and 1955 transitions. Second operand has 521 states, 520 states have (on average 2.2403846153846154) internal successors, (1165), 521 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:04,337 INFO L93 Difference]: Finished difference Result 4482 states and 4668 transitions. [2022-11-20 10:56:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 594 states. [2022-11-20 10:56:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 521 states, 520 states have (on average 2.2403846153846154) internal successors, (1165), 521 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2022-11-20 10:56:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:04,343 INFO L225 Difference]: With dead ends: 4482 [2022-11-20 10:56:04,343 INFO L226 Difference]: Without dead ends: 4423 [2022-11-20 10:56:04,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1369 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 938 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354661 ImplicationChecksByTransitivity, 91.9s TimeCoverageRelationStatistics Valid=183005, Invalid=699655, Unknown=0, NotChecked=0, Total=882660 [2022-11-20 10:56:04,486 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6378 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 1113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6378 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 4290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1113 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:04,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6378 Valid, 625 Invalid, 4290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1113 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:56:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-11-20 10:56:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 1941. [2022-11-20 10:56:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 1.0427835051546392) internal successors, (2023), 1940 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2023 transitions. [2022-11-20 10:56:06,411 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2023 transitions. Word has length 389 [2022-11-20 10:56:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:06,411 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2023 transitions. [2022-11-20 10:56:06,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 521 states, 520 states have (on average 2.2403846153846154) internal successors, (1165), 521 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2023 transitions. [2022-11-20 10:56:06,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-20 10:56:06,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:06,417 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 47, 41, 41, 41, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2022-11-20 10:56:06,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-11-20 10:56:06,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:06,623 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 10:56:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1561820615, now seen corresponding path program 16 times [2022-11-20 10:56:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:06,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738008388] [2022-11-20 10:56:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:06,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 0 proven. 12652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738008388] [2022-11-20 10:56:31,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738008388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:31,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536381172] [2022-11-20 10:56:31,557 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:56:31,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:31,558 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0649602-5d2c-43ea-875b-09a8eeac5410/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-20 10:56:31,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:56:31,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:56:31,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 219 conjunts are in the unsatisfiable core [2022-11-20 10:56:31,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 0 proven. 12652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:55,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 0 proven. 12652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:34,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536381172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:34,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:34,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218, 218] total 652 [2022-11-20 10:57:34,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510765569] [2022-11-20 10:57:34,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:34,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 653 states [2022-11-20 10:57:34,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 653 interpolants. [2022-11-20 10:57:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73290, Invalid=352466, Unknown=0, NotChecked=0, Total=425756 [2022-11-20 10:57:34,222 INFO L87 Difference]: Start difference. First operand 1941 states and 2023 transitions. Second operand has 653 states, 652 states have (on average 2.200920245398773) internal successors, (1435), 653 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)