./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:26:55,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:26:55,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:26:55,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:26:55,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:26:55,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:26:55,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:26:55,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:26:55,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:26:55,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:26:55,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:26:55,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:26:55,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:26:55,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:26:55,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:26:55,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:26:55,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:26:55,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:26:55,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:26:55,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:26:55,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:26:55,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:26:55,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:26:55,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:26:55,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:26:55,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:26:55,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:26:55,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:26:55,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:26:55,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:26:55,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:26:55,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:26:55,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:26:55,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:26:55,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:26:55,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:26:55,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:26:55,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:26:55,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:26:55,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:26:55,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:26:55,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-18 18:26:55,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:26:55,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:26:55,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:26:55,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:26:55,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:26:55,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:26:55,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:26:55,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:26:55,231 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:26:55,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:26:55,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:26:55,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:26:55,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:26:55,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:26:55,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:26:55,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:26:55,234 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:26:55,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:26:55,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:26:55,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:26:55,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:26:55,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:26:55,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:26:55,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:55,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:26:55,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:26:55,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:26:55,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:26:55,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:26:55,239 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:26:55,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:26:55,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:26:55,240 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_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-11-18 18:26:55,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:26:55,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:26:55,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:26:55,655 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:26:55,656 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:26:55,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-18 18:26:55,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/data/fcb6fb85e/6fc00e836b0548e0ab42a1d8670db4c2/FLAG945bc89ca [2022-11-18 18:26:56,316 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:26:56,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-18 18:26:56,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/data/fcb6fb85e/6fc00e836b0548e0ab42a1d8670db4c2/FLAG945bc89ca [2022-11-18 18:26:56,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/data/fcb6fb85e/6fc00e836b0548e0ab42a1d8670db4c2 [2022-11-18 18:26:56,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:26:56,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:26:56,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:56,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:26:56,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:26:56,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:56" (1/1) ... [2022-11-18 18:26:56,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48357b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:56, skipping insertion in model container [2022-11-18 18:26:56,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:56" (1/1) ... [2022-11-18 18:26:56,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:26:56,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:26:57,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:57,020 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:26:57,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:57,059 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:26:57,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57 WrapperNode [2022-11-18 18:26:57,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:57,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:57,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:26:57,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:26:57,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,105 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-18 18:26:57,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:57,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:26:57,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:26:57,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:26:57,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:26:57,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:26:57,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:26:57,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:26:57,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (1/1) ... [2022-11-18 18:26:57,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:26:57,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:26:57,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:26:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-11-18 18:26:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-11-18 18:26:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-11-18 18:26:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-11-18 18:26:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:26:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:26:57,347 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:26:57,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:26:57,616 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:26:57,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:26:57,625 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:26:57,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:57 BoogieIcfgContainer [2022-11-18 18:26:57,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:26:57,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:26:57,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:26:57,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:26:57,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:26:56" (1/3) ... [2022-11-18 18:26:57,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e732f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:57, skipping insertion in model container [2022-11-18 18:26:57,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:57" (2/3) ... [2022-11-18 18:26:57,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e732f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:57, skipping insertion in model container [2022-11-18 18:26:57,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:57" (3/3) ... [2022-11-18 18:26:57,638 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-11-18 18:26:57,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:26:57,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 18:26:57,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:26:57,743 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;@c5cacf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:26:57,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-18 18:26:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:26:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:26:57,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:57,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:57,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2022-11-18 18:26:57,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:57,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731038703] [2022-11-18 18:26:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:57,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:57,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731038703] [2022-11-18 18:26:57,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731038703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:57,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:57,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773319279] [2022-11-18 18:26:57,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:57,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:26:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:26:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:58,038 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-18 18:26:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:58,090 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-11-18 18:26:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:26:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2022-11-18 18:26:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:58,101 INFO L225 Difference]: With dead ends: 114 [2022-11-18 18:26:58,101 INFO L226 Difference]: Without dead ends: 56 [2022-11-18 18:26:58,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:58,115 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:58,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:26:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-18 18:26:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-18 18:26:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.5) internal successors, (51), 47 states have internal predecessors, (51), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:26:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-11-18 18:26:58,172 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2022-11-18 18:26:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:58,175 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-11-18 18:26:58,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-18 18:26:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-11-18 18:26:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:26:58,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:58,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:26:58,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2022-11-18 18:26:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:58,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642386352] [2022-11-18 18:26:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:58,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642386352] [2022-11-18 18:26:58,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642386352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:58,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:58,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:26:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400372409] [2022-11-18 18:26:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:26:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:58,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:26:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:26:58,357 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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) [2022-11-18 18:26:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:58,463 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-11-18 18:26:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:26:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 [2022-11-18 18:26:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:58,465 INFO L225 Difference]: With dead ends: 109 [2022-11-18 18:26:58,465 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 18:26:58,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:26:58,468 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 141 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:26:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 18:26:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-18 18:26:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:26:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-11-18 18:26:58,502 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2022-11-18 18:26:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:58,502 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-11-18 18:26:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2022-11-18 18:26:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-11-18 18:26:58,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:26:58,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:58,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:58,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:26:58,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:58,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2022-11-18 18:26:58,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:58,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584250467] [2022-11-18 18:26:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:58,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:58,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584250467] [2022-11-18 18:26:58,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584250467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:58,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:58,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:26:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114975241] [2022-11-18 18:26:58,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:58,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:26:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:26:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:26:58,771 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:59,023 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2022-11-18 18:26:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:26:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:26:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:59,028 INFO L225 Difference]: With dead ends: 155 [2022-11-18 18:26:59,028 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 18:26:59,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:26:59,036 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:59,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 329 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:26:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 18:26:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-11-18 18:26:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 71 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:26:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-11-18 18:26:59,066 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2022-11-18 18:26:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:59,066 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-11-18 18:26:59,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-11-18 18:26:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:26:59,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:59,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:59,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:26:59,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2022-11-18 18:26:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:59,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366085558] [2022-11-18 18:26:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:59,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366085558] [2022-11-18 18:26:59,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366085558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:59,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:59,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:26:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086062006] [2022-11-18 18:26:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:26:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:26:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:26:59,140 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:59,268 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-11-18 18:26:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:26:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 18:26:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:59,271 INFO L225 Difference]: With dead ends: 186 [2022-11-18 18:26:59,272 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 18:26:59,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:26:59,275 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:59,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:26:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 18:26:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-11-18 18:26:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:26:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-11-18 18:26:59,309 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2022-11-18 18:26:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:59,310 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-11-18 18:26:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-11-18 18:26:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:26:59,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:59,312 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:26:59,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2022-11-18 18:26:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:59,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611082862] [2022-11-18 18:26:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:26:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611082862] [2022-11-18 18:26:59,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611082862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:59,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:59,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:26:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090263661] [2022-11-18 18:26:59,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:59,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:26:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:26:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:26:59,449 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:26:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:59,646 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-11-18 18:26:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:26:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-11-18 18:26:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:59,649 INFO L225 Difference]: With dead ends: 226 [2022-11-18 18:26:59,649 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 18:26:59,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:26:59,653 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:59,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 309 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:26:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 18:26:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-11-18 18:26:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 100 states have internal predecessors, (125), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-18 18:26:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2022-11-18 18:26:59,686 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2022-11-18 18:26:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:59,686 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2022-11-18 18:26:59,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:26:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2022-11-18 18:26:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 18:26:59,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:59,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:59,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:26:59,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:26:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2022-11-18 18:26:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:59,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80940318] [2022-11-18 18:26:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:26:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:26:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:26:59,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:59,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80940318] [2022-11-18 18:26:59,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80940318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:59,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:59,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:26:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242426731] [2022-11-18 18:26:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:59,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:26:59,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:26:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:59,890 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:00,065 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2022-11-18 18:27:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:27:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-18 18:27:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:00,067 INFO L225 Difference]: With dead ends: 149 [2022-11-18 18:27:00,068 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 18:27:00,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:00,070 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:00,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 259 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 18:27:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2022-11-18 18:27:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 100 states have internal predecessors, (124), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-18 18:27:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2022-11-18 18:27:00,117 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2022-11-18 18:27:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:00,118 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2022-11-18 18:27:00,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2022-11-18 18:27:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 18:27:00,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:00,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:27:00,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2022-11-18 18:27:00,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:00,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321966543] [2022-11-18 18:27:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:00,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:27:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:27:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:27:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:00,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321966543] [2022-11-18 18:27:00,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321966543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:00,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:00,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:27:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219043960] [2022-11-18 18:27:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:27:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:27:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:27:00,293 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:00,427 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2022-11-18 18:27:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:27:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-18 18:27:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:00,436 INFO L225 Difference]: With dead ends: 163 [2022-11-18 18:27:00,436 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 18:27:00,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:00,441 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:00,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 246 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 18:27:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2022-11-18 18:27:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 111 states have internal predecessors, (137), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 18:27:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2022-11-18 18:27:00,467 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2022-11-18 18:27:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:00,467 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2022-11-18 18:27:00,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2022-11-18 18:27:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 18:27:00,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:00,469 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:27:00,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2022-11-18 18:27:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:00,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295017746] [2022-11-18 18:27:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:27:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:27:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:27:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295017746] [2022-11-18 18:27:00,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295017746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:00,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:00,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:27:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967205724] [2022-11-18 18:27:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:00,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:27:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:27:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:00,605 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:00,872 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2022-11-18 18:27:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:27:00,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-11-18 18:27:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:00,878 INFO L225 Difference]: With dead ends: 292 [2022-11-18 18:27:00,878 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 18:27:00,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:27:00,886 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:00,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 342 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:27:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 18:27:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2022-11-18 18:27:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 114 states have internal predecessors, (140), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 18:27:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2022-11-18 18:27:00,945 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2022-11-18 18:27:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:00,945 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2022-11-18 18:27:00,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:27:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2022-11-18 18:27:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 18:27:00,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:00,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:00,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:27:00,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2022-11-18 18:27:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787365861] [2022-11-18 18:27:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:00,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:00,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232278569] [2022-11-18 18:27:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:00,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:00,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:00,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:00,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:27:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:01,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:01,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:27:01,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:01,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787365861] [2022-11-18 18:27:01,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:01,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232278569] [2022-11-18 18:27:01,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232278569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:01,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:01,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:27:01,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225063498] [2022-11-18 18:27:01,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:01,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:27:01,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:27:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:01,220 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:27:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:01,314 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2022-11-18 18:27:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:27:01,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-18 18:27:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:01,324 INFO L225 Difference]: With dead ends: 203 [2022-11-18 18:27:01,324 INFO L226 Difference]: Without dead ends: 201 [2022-11-18 18:27:01,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:01,331 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:01,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 206 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-18 18:27:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-11-18 18:27:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 121 states have (on average 1.3553719008264462) internal successors, (164), 133 states have internal predecessors, (164), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2022-11-18 18:27:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2022-11-18 18:27:01,370 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2022-11-18 18:27:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:01,371 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2022-11-18 18:27:01,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:27:01,372 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2022-11-18 18:27:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:27:01,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:01,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:01,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:01,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:27:01,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2022-11-18 18:27:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:01,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547383393] [2022-11-18 18:27:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:01,597 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:01,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943260790] [2022-11-18 18:27:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:01,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:01,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:27:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:01,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:01,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:27:01,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:04,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547383393] [2022-11-18 18:27:04,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:04,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943260790] [2022-11-18 18:27:04,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943260790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:04,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:27:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-11-18 18:27:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599750502] [2022-11-18 18:27:04,649 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:27:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:27:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:27:04,652 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:27:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:04,803 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2022-11-18 18:27:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:27:04,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-18 18:27:04,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:04,806 INFO L225 Difference]: With dead ends: 257 [2022-11-18 18:27:04,806 INFO L226 Difference]: Without dead ends: 255 [2022-11-18 18:27:04,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:27:04,808 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:04,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 172 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-18 18:27:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-11-18 18:27:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.3) internal successors, (195), 159 states have internal predecessors, (195), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2022-11-18 18:27:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-11-18 18:27:04,832 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2022-11-18 18:27:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:04,833 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-11-18 18:27:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:27:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-11-18 18:27:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 18:27:04,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:04,835 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:04,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:27:05,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2022-11-18 18:27:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:05,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991480162] [2022-11-18 18:27:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:05,054 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:05,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175753015] [2022-11-18 18:27:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:05,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:05,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:27:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:27:05,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:05,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:05,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:05,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991480162] [2022-11-18 18:27:05,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175753015] [2022-11-18 18:27:05,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175753015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:05,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:05,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:27:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270134289] [2022-11-18 18:27:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:05,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:27:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:27:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:27:05,159 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:05,224 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2022-11-18 18:27:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:27:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-11-18 18:27:05,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:05,228 INFO L225 Difference]: With dead ends: 217 [2022-11-18 18:27:05,228 INFO L226 Difference]: Without dead ends: 216 [2022-11-18 18:27:05,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:05,229 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:05,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:27:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-18 18:27:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2022-11-18 18:27:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 157 states have (on average 1.286624203821656) internal successors, (202), 164 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-11-18 18:27:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-11-18 18:27:05,250 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2022-11-18 18:27:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:05,251 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-11-18 18:27:05,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-11-18 18:27:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 18:27:05,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:05,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:05,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:05,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:05,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2022-11-18 18:27:05,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:05,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643294071] [2022-11-18 18:27:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:05,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46328300] [2022-11-18 18:27:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:05,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:05,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:27:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:05,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:27:05,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:05,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643294071] [2022-11-18 18:27:05,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:05,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46328300] [2022-11-18 18:27:05,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46328300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:05,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:05,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:27:05,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329493124] [2022-11-18 18:27:05,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:27:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:27:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:27:05,613 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:05,673 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2022-11-18 18:27:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:27:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-11-18 18:27:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:05,678 INFO L225 Difference]: With dead ends: 213 [2022-11-18 18:27:05,678 INFO L226 Difference]: Without dead ends: 212 [2022-11-18 18:27:05,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:05,679 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 148 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:27:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-18 18:27:05,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-18 18:27:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 157 states have (on average 1.2738853503184713) internal successors, (200), 163 states have internal predecessors, (200), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-11-18 18:27:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2022-11-18 18:27:05,709 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2022-11-18 18:27:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:05,709 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2022-11-18 18:27:05,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2022-11-18 18:27:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:27:05,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:05,711 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:05,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:05,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:05,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2022-11-18 18:27:05,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:05,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821852017] [2022-11-18 18:27:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:05,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:05,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094044855] [2022-11-18 18:27:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:05,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:05,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:05,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:27:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:06,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:27:06,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:27:06,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:06,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:06,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821852017] [2022-11-18 18:27:06,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:06,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094044855] [2022-11-18 18:27:06,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094044855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:06,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:06,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:27:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257868696] [2022-11-18 18:27:06,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:27:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:27:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:27:06,083 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:06,157 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2022-11-18 18:27:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:27:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-18 18:27:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:06,161 INFO L225 Difference]: With dead ends: 218 [2022-11-18 18:27:06,162 INFO L226 Difference]: Without dead ends: 217 [2022-11-18 18:27:06,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:06,164 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:06,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:27:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-18 18:27:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2022-11-18 18:27:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.270440251572327) internal successors, (202), 165 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-11-18 18:27:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2022-11-18 18:27:06,194 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2022-11-18 18:27:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:06,195 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2022-11-18 18:27:06,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2022-11-18 18:27:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:27:06,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:06,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:06,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:06,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:06,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2022-11-18 18:27:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:06,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302547939] [2022-11-18 18:27:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:06,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:06,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:06,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267426826] [2022-11-18 18:27:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:06,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:06,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:06,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:06,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:27:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:06,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:27:06,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:27:06,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:06,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302547939] [2022-11-18 18:27:06,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:06,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267426826] [2022-11-18 18:27:06,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267426826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:06,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:06,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:27:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551732028] [2022-11-18 18:27:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:27:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:27:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:27:06,577 INFO L87 Difference]: Start difference. First operand 214 states and 285 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:06,632 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2022-11-18 18:27:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:27:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-11-18 18:27:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:06,634 INFO L225 Difference]: With dead ends: 214 [2022-11-18 18:27:06,635 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 18:27:06,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:27:06,636 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 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 [2022-11-18 18:27:06,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:27:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 18:27:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-18 18:27:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 164 states have internal predecessors, (201), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-11-18 18:27:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2022-11-18 18:27:06,662 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2022-11-18 18:27:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:06,664 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2022-11-18 18:27:06,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:27:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2022-11-18 18:27:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 18:27:06,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:06,668 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:06,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:27:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:06,874 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2022-11-18 18:27:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:06,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741789900] [2022-11-18 18:27:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:06,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496139500] [2022-11-18 18:27:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:06,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:06,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:27:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:06,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:27:06,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:07,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741789900] [2022-11-18 18:27:07,328 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496139500] [2022-11-18 18:27:07,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496139500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:07,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:07,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 18:27:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252294208] [2022-11-18 18:27:07,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:07,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:27:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:27:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:07,330 INFO L87 Difference]: Start difference. First operand 213 states and 284 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:08,123 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2022-11-18 18:27:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:27:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-11-18 18:27:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:08,126 INFO L225 Difference]: With dead ends: 316 [2022-11-18 18:27:08,126 INFO L226 Difference]: Without dead ends: 315 [2022-11-18 18:27:08,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:27:08,128 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:08,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 589 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:27:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-18 18:27:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2022-11-18 18:27:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 209 states have (on average 1.30622009569378) internal successors, (273), 216 states have internal predecessors, (273), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2022-11-18 18:27:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-11-18 18:27:08,148 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2022-11-18 18:27:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:08,149 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-11-18 18:27:08,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-11-18 18:27:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:27:08,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:08,150 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:08,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:08,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:27:08,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2022-11-18 18:27:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:08,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120293537] [2022-11-18 18:27:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:08,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818665581] [2022-11-18 18:27:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:08,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:08,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:08,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:27:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:27:08,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:27:08,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120293537] [2022-11-18 18:27:08,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818665581] [2022-11-18 18:27:08,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818665581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:08,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:27:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951649353] [2022-11-18 18:27:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:08,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:27:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:27:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:27:08,456 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:27:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:08,488 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-11-18 18:27:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:27:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-11-18 18:27:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:08,491 INFO L225 Difference]: With dead ends: 278 [2022-11-18 18:27:08,491 INFO L226 Difference]: Without dead ends: 277 [2022-11-18 18:27:08,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:27:08,492 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:27:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-18 18:27:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-18 18:27:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 209 states have (on average 1.291866028708134) internal successors, (270), 215 states have internal predecessors, (270), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2022-11-18 18:27:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2022-11-18 18:27:08,514 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2022-11-18 18:27:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:08,514 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2022-11-18 18:27:08,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:27:08,515 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2022-11-18 18:27:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:27:08,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:08,516 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:08,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:27:08,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2022-11-18 18:27:08,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:08,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871910132] [2022-11-18 18:27:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:08,733 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:08,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156753949] [2022-11-18 18:27:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:08,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:08,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:08,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:27:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:08,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:27:08,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:27:08,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871910132] [2022-11-18 18:27:08,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156753949] [2022-11-18 18:27:08,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156753949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:08,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:08,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:27:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998833867] [2022-11-18 18:27:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:27:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:27:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:27:08,936 INFO L87 Difference]: Start difference. First operand 277 states and 381 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:09,052 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-11-18 18:27:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:27:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-11-18 18:27:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:09,055 INFO L225 Difference]: With dead ends: 496 [2022-11-18 18:27:09,056 INFO L226 Difference]: Without dead ends: 253 [2022-11-18 18:27:09,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:09,058 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 24 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:09,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 107 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-18 18:27:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-11-18 18:27:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 196 states have internal predecessors, (242), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2022-11-18 18:27:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-11-18 18:27:09,077 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2022-11-18 18:27:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:09,077 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-11-18 18:27:09,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-11-18 18:27:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:27:09,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:09,079 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:09,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:27:09,285 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2022-11-18 18:27:09,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:09,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252297938] [2022-11-18 18:27:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:09,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:09,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457158022] [2022-11-18 18:27:09,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:09,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:09,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:09,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:09,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:27:09,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:09,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:09,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:27:09,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:27:09,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:09,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252297938] [2022-11-18 18:27:09,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457158022] [2022-11-18 18:27:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457158022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:09,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:09,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:27:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638407583] [2022-11-18 18:27:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:27:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:27:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:09,502 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:09,843 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2022-11-18 18:27:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:27:09,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-11-18 18:27:09,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:09,846 INFO L225 Difference]: With dead ends: 516 [2022-11-18 18:27:09,846 INFO L226 Difference]: Without dead ends: 303 [2022-11-18 18:27:09,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:27:09,849 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:09,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 345 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-18 18:27:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2022-11-18 18:27:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 223 states have (on average 1.3094170403587444) internal successors, (292), 228 states have internal predecessors, (292), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2022-11-18 18:27:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2022-11-18 18:27:09,871 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2022-11-18 18:27:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:09,872 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2022-11-18 18:27:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2022-11-18 18:27:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 18:27:09,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:09,873 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:09,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:27:10,079 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2022-11-18 18:27:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987265135] [2022-11-18 18:27:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:10,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:10,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494596052] [2022-11-18 18:27:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:10,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:10,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:10,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:10,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:27:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:10,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:27:10,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:10,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:10,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987265135] [2022-11-18 18:27:10,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494596052] [2022-11-18 18:27:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494596052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:10,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:10,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-18 18:27:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370475858] [2022-11-18 18:27:10,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:27:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:27:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:27:10,554 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:11,008 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2022-11-18 18:27:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:27:11,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-11-18 18:27:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:11,012 INFO L225 Difference]: With dead ends: 533 [2022-11-18 18:27:11,012 INFO L226 Difference]: Without dead ends: 323 [2022-11-18 18:27:11,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:27:11,014 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 51 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:11,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 469 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-18 18:27:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-11-18 18:27:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 233 states have (on average 1.3047210300429184) internal successors, (304), 238 states have internal predecessors, (304), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2022-11-18 18:27:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-11-18 18:27:11,039 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2022-11-18 18:27:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:11,040 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-11-18 18:27:11,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 18:27:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-11-18 18:27:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 18:27:11,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:11,041 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:11,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:11,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2022-11-18 18:27:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199829130] [2022-11-18 18:27:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:11,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:11,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009505399] [2022-11-18 18:27:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:11,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:11,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:11,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:27:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:11,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:27:11,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:27:11,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:27:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:12,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199829130] [2022-11-18 18:27:12,642 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:12,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009505399] [2022-11-18 18:27:12,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009505399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:12,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:12,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 18:27:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762419719] [2022-11-18 18:27:12,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:12,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:27:12,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:27:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:27:12,644 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 18:27:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:14,562 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2022-11-18 18:27:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:27:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 55 [2022-11-18 18:27:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:14,565 INFO L225 Difference]: With dead ends: 606 [2022-11-18 18:27:14,565 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 18:27:14,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 18:27:14,567 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 197 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:14,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 774 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 580 Invalid, 0 Unknown, 70 Unchecked, 0.9s Time] [2022-11-18 18:27:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 18:27:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2022-11-18 18:27:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 281 states have internal predecessors, (365), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 66 states have call predecessors, (85), 52 states have call successors, (85) [2022-11-18 18:27:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2022-11-18 18:27:14,592 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2022-11-18 18:27:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:14,592 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2022-11-18 18:27:14,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 18:27:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2022-11-18 18:27:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 18:27:14,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:14,594 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:14,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:14,802 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:14,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2022-11-18 18:27:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:14,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992604878] [2022-11-18 18:27:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:14,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:14,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452566559] [2022-11-18 18:27:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:14,814 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:14,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:27:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:14,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:27:14,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:27:15,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 18:27:15,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992604878] [2022-11-18 18:27:15,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452566559] [2022-11-18 18:27:15,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452566559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:15,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:15,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-11-18 18:27:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732247977] [2022-11-18 18:27:15,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:27:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:27:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:27:15,242 INFO L87 Difference]: Start difference. First operand 364 states and 502 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 18:27:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:15,684 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2022-11-18 18:27:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:27:15,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2022-11-18 18:27:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:15,688 INFO L225 Difference]: With dead ends: 706 [2022-11-18 18:27:15,688 INFO L226 Difference]: Without dead ends: 382 [2022-11-18 18:27:15,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:15,692 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 71 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 459 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-18 18:27:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2022-11-18 18:27:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.2892857142857144) internal successors, (361), 281 states have internal predecessors, (361), 52 states have call successors, (52), 17 states have call predecessors, (52), 20 states have return successors, (83), 64 states have call predecessors, (83), 52 states have call successors, (83) [2022-11-18 18:27:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2022-11-18 18:27:15,717 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2022-11-18 18:27:15,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:15,718 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2022-11-18 18:27:15,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 18:27:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2022-11-18 18:27:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 18:27:15,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:15,721 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:15,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 18:27:15,928 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2022-11-18 18:27:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798959770] [2022-11-18 18:27:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:15,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813971005] [2022-11-18 18:27:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:15,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:15,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:15,940 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:15,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:27:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:16,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:27:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:27:16,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:16,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:16,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798959770] [2022-11-18 18:27:16,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:16,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813971005] [2022-11-18 18:27:16,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813971005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:16,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:16,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:27:16,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456936826] [2022-11-18 18:27:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:27:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:27:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:16,113 INFO L87 Difference]: Start difference. First operand 363 states and 496 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 18:27:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:16,324 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2022-11-18 18:27:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:27:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-11-18 18:27:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:16,330 INFO L225 Difference]: With dead ends: 683 [2022-11-18 18:27:16,330 INFO L226 Difference]: Without dead ends: 369 [2022-11-18 18:27:16,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:27:16,333 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:16,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 341 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:27:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-18 18:27:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2022-11-18 18:27:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.2779783393501805) internal successors, (354), 278 states have internal predecessors, (354), 50 states have call successors, (50), 18 states have call predecessors, (50), 21 states have return successors, (77), 62 states have call predecessors, (77), 50 states have call successors, (77) [2022-11-18 18:27:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2022-11-18 18:27:16,380 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2022-11-18 18:27:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:16,381 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2022-11-18 18:27:16,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 18:27:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2022-11-18 18:27:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 18:27:16,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:16,382 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:16,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:16,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 18:27:16,589 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:16,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2022-11-18 18:27:16,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:16,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218445711] [2022-11-18 18:27:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:16,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964560028] [2022-11-18 18:27:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:16,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:16,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:16,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:27:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:16,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:16,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 18:27:16,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 18:27:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218445711] [2022-11-18 18:27:17,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:17,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964560028] [2022-11-18 18:27:17,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964560028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:17,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:17,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:27:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986345836] [2022-11-18 18:27:17,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:27:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:27:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:27:17,099 INFO L87 Difference]: Start difference. First operand 359 states and 481 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:17,692 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2022-11-18 18:27:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:27:17,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 66 [2022-11-18 18:27:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:17,695 INFO L225 Difference]: With dead ends: 442 [2022-11-18 18:27:17,695 INFO L226 Difference]: Without dead ends: 441 [2022-11-18 18:27:17,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:27:17,697 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 127 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:17,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 569 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:27:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-18 18:27:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2022-11-18 18:27:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.279503105590062) internal successors, (412), 322 states have internal predecessors, (412), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2022-11-18 18:27:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2022-11-18 18:27:17,729 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2022-11-18 18:27:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2022-11-18 18:27:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2022-11-18 18:27:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 18:27:17,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:17,731 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:17,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:17,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:27:17,938 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2022-11-18 18:27:17,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:17,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169299709] [2022-11-18 18:27:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:17,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252073580] [2022-11-18 18:27:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:17,954 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:17,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:27:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:18,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 18:27:18,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:18,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:18,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169299709] [2022-11-18 18:27:18,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:18,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252073580] [2022-11-18 18:27:18,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252073580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:18,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:18,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:27:18,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821674278] [2022-11-18 18:27:18,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:27:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:18,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:27:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:18,231 INFO L87 Difference]: Start difference. First operand 418 states and 572 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:27:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:18,485 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2022-11-18 18:27:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:27:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-11-18 18:27:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:18,489 INFO L225 Difference]: With dead ends: 425 [2022-11-18 18:27:18,489 INFO L226 Difference]: Without dead ends: 424 [2022-11-18 18:27:18,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:27:18,491 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:18,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 331 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:27:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-18 18:27:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-11-18 18:27:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.2732919254658386) internal successors, (410), 322 states have internal predecessors, (410), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2022-11-18 18:27:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2022-11-18 18:27:18,535 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2022-11-18 18:27:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:18,535 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2022-11-18 18:27:18,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:27:18,536 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2022-11-18 18:27:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 18:27:18,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:18,537 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:18,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:18,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 18:27:18,743 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2022-11-18 18:27:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804120455] [2022-11-18 18:27:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:18,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:18,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294035939] [2022-11-18 18:27:18,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:18,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:18,754 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:18,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:27:18,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:18,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:18,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:27:18,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 18:27:19,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 18:27:19,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:19,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804120455] [2022-11-18 18:27:19,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:19,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294035939] [2022-11-18 18:27:19,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294035939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:19,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:19,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 18:27:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744795967] [2022-11-18 18:27:19,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:19,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:27:19,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:27:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:19,381 INFO L87 Difference]: Start difference. First operand 418 states and 570 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:20,207 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2022-11-18 18:27:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:27:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 71 [2022-11-18 18:27:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:20,211 INFO L225 Difference]: With dead ends: 478 [2022-11-18 18:27:20,211 INFO L226 Difference]: Without dead ends: 477 [2022-11-18 18:27:20,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:27:20,213 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:20,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:27:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-18 18:27:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2022-11-18 18:27:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.2701949860724233) internal successors, (456), 361 states have internal predecessors, (456), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2022-11-18 18:27:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2022-11-18 18:27:20,244 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2022-11-18 18:27:20,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:20,244 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2022-11-18 18:27:20,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2022-11-18 18:27:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 18:27:20,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:20,246 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:20,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:20,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 18:27:20,453 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2022-11-18 18:27:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715182430] [2022-11-18 18:27:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:20,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:20,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672135649] [2022-11-18 18:27:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:20,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:20,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:20,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:20,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 18:27:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:20,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:27:20,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 18:27:20,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715182430] [2022-11-18 18:27:20,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672135649] [2022-11-18 18:27:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672135649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:20,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:20,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:27:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237918354] [2022-11-18 18:27:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:27:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:27:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:27:20,782 INFO L87 Difference]: Start difference. First operand 466 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:21,227 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2022-11-18 18:27:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:27:21,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-18 18:27:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:21,231 INFO L225 Difference]: With dead ends: 875 [2022-11-18 18:27:21,231 INFO L226 Difference]: Without dead ends: 466 [2022-11-18 18:27:21,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:27:21,233 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:21,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 271 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-18 18:27:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-11-18 18:27:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 352 states have (on average 1.2727272727272727) internal successors, (448), 355 states have internal predecessors, (448), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2022-11-18 18:27:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2022-11-18 18:27:21,271 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2022-11-18 18:27:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:21,272 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2022-11-18 18:27:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2022-11-18 18:27:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 18:27:21,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:21,274 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:21,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:21,481 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2022-11-18 18:27:21,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120339863] [2022-11-18 18:27:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:21,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638465251] [2022-11-18 18:27:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:21,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:21,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:21,493 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:21,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 18:27:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:21,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:27:21,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 18:27:21,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120339863] [2022-11-18 18:27:22,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638465251] [2022-11-18 18:27:22,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638465251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:22,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:27:22,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-18 18:27:22,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462594654] [2022-11-18 18:27:22,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:27:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:27:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:27:22,366 INFO L87 Difference]: Start difference. First operand 458 states and 615 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:22,978 INFO L93 Difference]: Finished difference Result 477 states and 629 transitions. [2022-11-18 18:27:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:27:22,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79 [2022-11-18 18:27:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:22,982 INFO L225 Difference]: With dead ends: 477 [2022-11-18 18:27:22,982 INFO L226 Difference]: Without dead ends: 476 [2022-11-18 18:27:22,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:27:22,984 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 67 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:22,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 424 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-18 18:27:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 468. [2022-11-18 18:27:23,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 360 states have (on average 1.2694444444444444) internal successors, (457), 363 states have internal predecessors, (457), 67 states have call successors, (67), 25 states have call predecessors, (67), 30 states have return successors, (102), 79 states have call predecessors, (102), 67 states have call successors, (102) [2022-11-18 18:27:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 626 transitions. [2022-11-18 18:27:23,015 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 626 transitions. Word has length 79 [2022-11-18 18:27:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:23,015 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 626 transitions. [2022-11-18 18:27:23,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 626 transitions. [2022-11-18 18:27:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 18:27:23,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:23,017 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:23,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:27:23,224 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2022-11-18 18:27:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492019218] [2022-11-18 18:27:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:23,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:23,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670740435] [2022-11-18 18:27:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:23,234 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:23,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 18:27:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:23,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:27:23,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-18 18:27:23,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:23,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492019218] [2022-11-18 18:27:23,400 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:23,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670740435] [2022-11-18 18:27:23,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670740435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:23,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:23,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:27:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128285855] [2022-11-18 18:27:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:27:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:27:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:27:23,402 INFO L87 Difference]: Start difference. First operand 468 states and 626 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 18:27:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:23,495 INFO L93 Difference]: Finished difference Result 470 states and 632 transitions. [2022-11-18 18:27:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:27:23,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2022-11-18 18:27:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:23,499 INFO L225 Difference]: With dead ends: 470 [2022-11-18 18:27:23,499 INFO L226 Difference]: Without dead ends: 469 [2022-11-18 18:27:23,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:23,501 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:23,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-18 18:27:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2022-11-18 18:27:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 360 states have (on average 1.2472222222222222) internal successors, (449), 362 states have internal predecessors, (449), 67 states have call successors, (67), 25 states have call predecessors, (67), 30 states have return successors, (102), 79 states have call predecessors, (102), 67 states have call successors, (102) [2022-11-18 18:27:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 618 transitions. [2022-11-18 18:27:23,555 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 618 transitions. Word has length 80 [2022-11-18 18:27:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:23,556 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 618 transitions. [2022-11-18 18:27:23,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 18:27:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 618 transitions. [2022-11-18 18:27:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 18:27:23,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:23,557 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:23,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:23,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:23,764 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash 653690462, now seen corresponding path program 2 times [2022-11-18 18:27:23,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:23,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284610133] [2022-11-18 18:27:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:23,774 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:23,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920248381] [2022-11-18 18:27:23,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:23,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:23,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:23,776 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:23,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 18:27:23,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:23,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:23,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:27:23,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 18:27:24,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 18:27:24,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284610133] [2022-11-18 18:27:24,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920248381] [2022-11-18 18:27:24,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920248381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:24,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:24,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-18 18:27:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773496544] [2022-11-18 18:27:24,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:24,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:27:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:27:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:27:24,414 INFO L87 Difference]: Start difference. First operand 467 states and 618 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-18 18:27:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:25,192 INFO L93 Difference]: Finished difference Result 918 states and 1215 transitions. [2022-11-18 18:27:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:27:25,193 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 84 [2022-11-18 18:27:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:25,196 INFO L225 Difference]: With dead ends: 918 [2022-11-18 18:27:25,196 INFO L226 Difference]: Without dead ends: 512 [2022-11-18 18:27:25,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:27:25,199 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 109 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:25,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 723 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:27:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-18 18:27:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 487. [2022-11-18 18:27:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 375 states have (on average 1.2426666666666666) internal successors, (466), 378 states have internal predecessors, (466), 68 states have call successors, (68), 28 states have call predecessors, (68), 34 states have return successors, (103), 80 states have call predecessors, (103), 68 states have call successors, (103) [2022-11-18 18:27:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 637 transitions. [2022-11-18 18:27:25,232 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 637 transitions. Word has length 84 [2022-11-18 18:27:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:25,232 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 637 transitions. [2022-11-18 18:27:25,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-18 18:27:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 637 transitions. [2022-11-18 18:27:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 18:27:25,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:25,234 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:25,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-18 18:27:25,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:27:25,441 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2022-11-18 18:27:25,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:25,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099363799] [2022-11-18 18:27:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:25,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:25,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682585730] [2022-11-18 18:27:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:25,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:25,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 18:27:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:25,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:27:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 18:27:25,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:25,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:25,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099363799] [2022-11-18 18:27:25,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682585730] [2022-11-18 18:27:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682585730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:25,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:27:25,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-11-18 18:27:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799419302] [2022-11-18 18:27:25,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:27:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:27:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:25,923 INFO L87 Difference]: Start difference. First operand 487 states and 637 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:26,059 INFO L93 Difference]: Finished difference Result 525 states and 696 transitions. [2022-11-18 18:27:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:27:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2022-11-18 18:27:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:26,064 INFO L225 Difference]: With dead ends: 525 [2022-11-18 18:27:26,064 INFO L226 Difference]: Without dead ends: 524 [2022-11-18 18:27:26,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:26,065 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:26,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 192 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-18 18:27:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 499. [2022-11-18 18:27:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 387 states have (on average 1.227390180878553) internal successors, (475), 384 states have internal predecessors, (475), 68 states have call successors, (68), 28 states have call predecessors, (68), 34 states have return successors, (103), 86 states have call predecessors, (103), 68 states have call successors, (103) [2022-11-18 18:27:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 646 transitions. [2022-11-18 18:27:26,098 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 646 transitions. Word has length 84 [2022-11-18 18:27:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:26,098 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 646 transitions. [2022-11-18 18:27:26,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 646 transitions. [2022-11-18 18:27:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 18:27:26,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:26,100 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:26,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:26,306 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2022-11-18 18:27:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:26,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139591037] [2022-11-18 18:27:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:26,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:26,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888674270] [2022-11-18 18:27:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:26,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:26,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:26,314 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:26,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 18:27:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:26,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:27:26,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 18:27:26,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139591037] [2022-11-18 18:27:26,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888674270] [2022-11-18 18:27:26,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888674270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:26,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:27:26,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-11-18 18:27:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946811347] [2022-11-18 18:27:26,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:27:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:26,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:27:26,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:26,757 INFO L87 Difference]: Start difference. First operand 499 states and 646 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:26,850 INFO L93 Difference]: Finished difference Result 524 states and 687 transitions. [2022-11-18 18:27:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:27:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-11-18 18:27:26,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:26,854 INFO L225 Difference]: With dead ends: 524 [2022-11-18 18:27:26,854 INFO L226 Difference]: Without dead ends: 523 [2022-11-18 18:27:26,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:27:26,856 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 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 [2022-11-18 18:27:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-18 18:27:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 484. [2022-11-18 18:27:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 372 states have (on average 1.228494623655914) internal successors, (457), 376 states have internal predecessors, (457), 68 states have call successors, (68), 28 states have call predecessors, (68), 34 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2022-11-18 18:27:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 628 transitions. [2022-11-18 18:27:26,888 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 628 transitions. Word has length 85 [2022-11-18 18:27:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:26,889 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 628 transitions. [2022-11-18 18:27:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 628 transitions. [2022-11-18 18:27:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 18:27:26,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:26,891 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:26,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:27,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:27,097 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2022-11-18 18:27:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:27,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227525253] [2022-11-18 18:27:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:27,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49293022] [2022-11-18 18:27:27,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:27,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:27,110 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:27,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 18:27:27,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:27,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:27,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:27:27,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 18:27:27,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:27,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:27,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227525253] [2022-11-18 18:27:27,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:27,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49293022] [2022-11-18 18:27:27,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49293022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:27,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:27,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:27:27,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183817041] [2022-11-18 18:27:27,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:27,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:27:27,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:27,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:27:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:27:27,652 INFO L87 Difference]: Start difference. First operand 484 states and 628 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:27,830 INFO L93 Difference]: Finished difference Result 486 states and 633 transitions. [2022-11-18 18:27:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:27:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2022-11-18 18:27:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:27,839 INFO L225 Difference]: With dead ends: 486 [2022-11-18 18:27:27,839 INFO L226 Difference]: Without dead ends: 483 [2022-11-18 18:27:27,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:27:27,842 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:27,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 225 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-18 18:27:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 412. [2022-11-18 18:27:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 317 states have (on average 1.1703470031545742) internal successors, (371), 319 states have internal predecessors, (371), 58 states have call successors, (58), 28 states have call predecessors, (58), 30 states have return successors, (68), 64 states have call predecessors, (68), 58 states have call successors, (68) [2022-11-18 18:27:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2022-11-18 18:27:27,899 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 86 [2022-11-18 18:27:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:27,900 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2022-11-18 18:27:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2022-11-18 18:27:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 18:27:27,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:27,902 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:27,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:28,105 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2022-11-18 18:27:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:28,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188381019] [2022-11-18 18:27:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:28,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:28,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800897267] [2022-11-18 18:27:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:28,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:28,116 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:28,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 18:27:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:28,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:27:28,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-18 18:27:28,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-18 18:27:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:28,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188381019] [2022-11-18 18:27:28,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:28,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800897267] [2022-11-18 18:27:28,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800897267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:28,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:28,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 18:27:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697923426] [2022-11-18 18:27:28,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:28,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:27:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:27:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:28,655 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:29,341 INFO L93 Difference]: Finished difference Result 563 states and 697 transitions. [2022-11-18 18:27:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:27:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2022-11-18 18:27:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:29,346 INFO L225 Difference]: With dead ends: 563 [2022-11-18 18:27:29,346 INFO L226 Difference]: Without dead ends: 560 [2022-11-18 18:27:29,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:27:29,347 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 144 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:29,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 471 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:27:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-18 18:27:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 532. [2022-11-18 18:27:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 412 states have (on average 1.1844660194174756) internal successors, (488), 414 states have internal predecessors, (488), 77 states have call successors, (77), 34 states have call predecessors, (77), 36 states have return successors, (87), 83 states have call predecessors, (87), 77 states have call successors, (87) [2022-11-18 18:27:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 652 transitions. [2022-11-18 18:27:29,382 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 652 transitions. Word has length 106 [2022-11-18 18:27:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:29,382 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 652 transitions. [2022-11-18 18:27:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 652 transitions. [2022-11-18 18:27:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 18:27:29,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:29,384 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:29,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:29,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:29,590 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2022-11-18 18:27:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:29,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783629803] [2022-11-18 18:27:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:29,602 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603222844] [2022-11-18 18:27:29,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:29,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:29,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:29,604 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:29,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 18:27:29,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:29,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:29,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:27:29,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-18 18:27:29,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783629803] [2022-11-18 18:27:29,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:29,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603222844] [2022-11-18 18:27:29,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603222844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:29,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:29,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:27:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741604225] [2022-11-18 18:27:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:29,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:27:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:29,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:27:29,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:27:29,780 INFO L87 Difference]: Start difference. First operand 532 states and 652 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:27:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:29,949 INFO L93 Difference]: Finished difference Result 840 states and 1034 transitions. [2022-11-18 18:27:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:27:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 112 [2022-11-18 18:27:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:29,952 INFO L225 Difference]: With dead ends: 840 [2022-11-18 18:27:29,952 INFO L226 Difference]: Without dead ends: 465 [2022-11-18 18:27:29,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:27:29,954 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:29,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 166 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-18 18:27:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 464. [2022-11-18 18:27:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 360 states have (on average 1.163888888888889) internal successors, (419), 362 states have internal predecessors, (419), 64 states have call successors, (64), 31 states have call predecessors, (64), 33 states have return successors, (72), 70 states have call predecessors, (72), 64 states have call successors, (72) [2022-11-18 18:27:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 555 transitions. [2022-11-18 18:27:29,985 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 555 transitions. Word has length 112 [2022-11-18 18:27:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:29,986 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 555 transitions. [2022-11-18 18:27:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:27:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 555 transitions. [2022-11-18 18:27:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 18:27:29,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:29,988 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:30,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:30,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:30,195 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2022-11-18 18:27:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:30,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182118260] [2022-11-18 18:27:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:30,206 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:30,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38187071] [2022-11-18 18:27:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:30,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:30,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:30,208 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 18:27:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:27:30,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 18:27:30,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 18:27:31,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182118260] [2022-11-18 18:27:31,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38187071] [2022-11-18 18:27:31,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38187071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:31,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:31,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 18:27:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67109395] [2022-11-18 18:27:31,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:27:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:27:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:27:31,514 INFO L87 Difference]: Start difference. First operand 464 states and 555 transitions. Second operand has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:33,205 INFO L93 Difference]: Finished difference Result 838 states and 1031 transitions. [2022-11-18 18:27:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:27:33,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2022-11-18 18:27:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:33,209 INFO L225 Difference]: With dead ends: 838 [2022-11-18 18:27:33,209 INFO L226 Difference]: Without dead ends: 509 [2022-11-18 18:27:33,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 18:27:33,212 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 127 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:33,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 922 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 682 Invalid, 0 Unknown, 61 Unchecked, 0.9s Time] [2022-11-18 18:27:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-18 18:27:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 486. [2022-11-18 18:27:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 378 states have (on average 1.1507936507936507) internal successors, (435), 379 states have internal predecessors, (435), 65 states have call successors, (65), 32 states have call predecessors, (65), 36 states have return successors, (77), 74 states have call predecessors, (77), 65 states have call successors, (77) [2022-11-18 18:27:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 577 transitions. [2022-11-18 18:27:33,240 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 577 transitions. Word has length 114 [2022-11-18 18:27:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:33,240 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 577 transitions. [2022-11-18 18:27:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:27:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 577 transitions. [2022-11-18 18:27:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 18:27:33,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:33,259 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:33,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:33,467 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2022-11-18 18:27:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108264160] [2022-11-18 18:27:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:33,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:33,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128909186] [2022-11-18 18:27:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:33,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:33,481 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:33,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 18:27:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:33,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:27:33,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-18 18:27:33,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-18 18:27:38,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:38,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108264160] [2022-11-18 18:27:38,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:38,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128909186] [2022-11-18 18:27:38,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128909186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:38,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:38,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-18 18:27:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564991569] [2022-11-18 18:27:38,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:38,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:27:38,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:27:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=892, Unknown=1, NotChecked=0, Total=992 [2022-11-18 18:27:38,951 INFO L87 Difference]: Start difference. First operand 486 states and 577 transitions. Second operand has 32 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-18 18:27:46,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:27:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:46,944 INFO L93 Difference]: Finished difference Result 1303 states and 1685 transitions. [2022-11-18 18:27:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:27:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 119 [2022-11-18 18:27:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:46,951 INFO L225 Difference]: With dead ends: 1303 [2022-11-18 18:27:46,951 INFO L226 Difference]: Without dead ends: 981 [2022-11-18 18:27:46,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=360, Invalid=2831, Unknown=1, NotChecked=0, Total=3192 [2022-11-18 18:27:46,954 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 265 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:46,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1156 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1652 Invalid, 0 Unknown, 97 Unchecked, 5.0s Time] [2022-11-18 18:27:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-18 18:27:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 761. [2022-11-18 18:27:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 594 states have (on average 1.1919191919191918) internal successors, (708), 596 states have internal predecessors, (708), 111 states have call successors, (111), 43 states have call predecessors, (111), 49 states have return successors, (141), 121 states have call predecessors, (141), 111 states have call successors, (141) [2022-11-18 18:27:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 960 transitions. [2022-11-18 18:27:47,034 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 960 transitions. Word has length 119 [2022-11-18 18:27:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:47,035 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 960 transitions. [2022-11-18 18:27:47,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 28 states have internal predecessors, (88), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-18 18:27:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 960 transitions. [2022-11-18 18:27:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 18:27:47,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:47,037 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:47,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:47,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 18:27:47,244 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1993467777, now seen corresponding path program 2 times [2022-11-18 18:27:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:47,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742338384] [2022-11-18 18:27:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:47,259 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:47,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241737346] [2022-11-18 18:27:47,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:47,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:47,261 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:47,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 18:27:47,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:47,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:47,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:27:47,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 239 proven. 10 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 18:27:47,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 93 proven. 46 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-18 18:27:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742338384] [2022-11-18 18:27:47,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241737346] [2022-11-18 18:27:47,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241737346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:47,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:47,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-11-18 18:27:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184464509] [2022-11-18 18:27:47,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:27:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:27:47,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:27:47,931 INFO L87 Difference]: Start difference. First operand 761 states and 960 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:48,499 INFO L93 Difference]: Finished difference Result 1469 states and 1883 transitions. [2022-11-18 18:27:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:27:48,500 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 139 [2022-11-18 18:27:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:48,509 INFO L225 Difference]: With dead ends: 1469 [2022-11-18 18:27:48,509 INFO L226 Difference]: Without dead ends: 801 [2022-11-18 18:27:48,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 252 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:27:48,513 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 82 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:48,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 540 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:27:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-18 18:27:48,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 771. [2022-11-18 18:27:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 601 states have (on average 1.1880199667221298) internal successors, (714), 605 states have internal predecessors, (714), 112 states have call successors, (112), 45 states have call predecessors, (112), 51 states have return successors, (138), 120 states have call predecessors, (138), 112 states have call successors, (138) [2022-11-18 18:27:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 964 transitions. [2022-11-18 18:27:48,590 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 964 transitions. Word has length 139 [2022-11-18 18:27:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:48,590 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 964 transitions. [2022-11-18 18:27:48,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 18:27:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 964 transitions. [2022-11-18 18:27:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:27:48,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:48,592 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:48,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:48,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 18:27:48,799 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2022-11-18 18:27:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:48,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481306054] [2022-11-18 18:27:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:48,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:48,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:48,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116216343] [2022-11-18 18:27:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:48,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:48,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:48,812 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:48,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:27:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:48,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-18 18:27:49,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-18 18:27:49,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481306054] [2022-11-18 18:27:49,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116216343] [2022-11-18 18:27:49,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116216343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:49,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:27:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574092110] [2022-11-18 18:27:49,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:27:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:27:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:27:49,338 INFO L87 Difference]: Start difference. First operand 771 states and 964 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 18:27:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:49,779 INFO L93 Difference]: Finished difference Result 777 states and 965 transitions. [2022-11-18 18:27:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:27:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2022-11-18 18:27:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:49,783 INFO L225 Difference]: With dead ends: 777 [2022-11-18 18:27:49,784 INFO L226 Difference]: Without dead ends: 776 [2022-11-18 18:27:49,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:27:49,785 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 180 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 322 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:27:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-18 18:27:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 771. [2022-11-18 18:27:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 601 states have (on average 1.1846921797004992) internal successors, (712), 605 states have internal predecessors, (712), 112 states have call successors, (112), 45 states have call predecessors, (112), 51 states have return successors, (138), 120 states have call predecessors, (138), 112 states have call successors, (138) [2022-11-18 18:27:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 962 transitions. [2022-11-18 18:27:49,854 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 962 transitions. Word has length 125 [2022-11-18 18:27:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 962 transitions. [2022-11-18 18:27:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 18:27:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 962 transitions. [2022-11-18 18:27:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 18:27:49,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:49,856 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:49,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 18:27:50,063 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1621099001, now seen corresponding path program 2 times [2022-11-18 18:27:50,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250520656] [2022-11-18 18:27:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:50,073 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:50,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142087604] [2022-11-18 18:27:50,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:27:50,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:50,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:50,075 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:50,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 18:27:50,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:27:50,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:50,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:27:50,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 18:27:50,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 59 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-18 18:27:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250520656] [2022-11-18 18:27:50,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:50,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142087604] [2022-11-18 18:27:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142087604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:50,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-11-18 18:27:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889953697] [2022-11-18 18:27:50,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:27:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:27:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:27:50,584 INFO L87 Difference]: Start difference. First operand 771 states and 962 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:51,006 INFO L93 Difference]: Finished difference Result 1340 states and 1719 transitions. [2022-11-18 18:27:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:27:51,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 129 [2022-11-18 18:27:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:51,012 INFO L225 Difference]: With dead ends: 1340 [2022-11-18 18:27:51,013 INFO L226 Difference]: Without dead ends: 776 [2022-11-18 18:27:51,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 240 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:51,016 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 64 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:51,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 457 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:27:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-18 18:27:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 761. [2022-11-18 18:27:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 593 states have (on average 1.1838111298482294) internal successors, (702), 597 states have internal predecessors, (702), 111 states have call successors, (111), 45 states have call predecessors, (111), 50 states have return successors, (135), 118 states have call predecessors, (135), 111 states have call successors, (135) [2022-11-18 18:27:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 948 transitions. [2022-11-18 18:27:51,083 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 948 transitions. Word has length 129 [2022-11-18 18:27:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:51,084 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 948 transitions. [2022-11-18 18:27:51,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:27:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 948 transitions. [2022-11-18 18:27:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 18:27:51,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:51,086 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:51,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:51,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 18:27:51,292 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1955065017, now seen corresponding path program 3 times [2022-11-18 18:27:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:51,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511050341] [2022-11-18 18:27:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:51,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:51,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82803815] [2022-11-18 18:27:51,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:27:51,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:51,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:51,305 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:51,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 18:27:51,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:27:51,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:51,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:27:51,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-18 18:27:51,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:27:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511050341] [2022-11-18 18:27:51,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82803815] [2022-11-18 18:27:51,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82803815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:27:51,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:27:51,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:27:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708645122] [2022-11-18 18:27:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:27:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:27:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:27:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:27:51,462 INFO L87 Difference]: Start difference. First operand 761 states and 948 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:51,703 INFO L93 Difference]: Finished difference Result 801 states and 1014 transitions. [2022-11-18 18:27:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:27:51,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2022-11-18 18:27:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:51,708 INFO L225 Difference]: With dead ends: 801 [2022-11-18 18:27:51,708 INFO L226 Difference]: Without dead ends: 800 [2022-11-18 18:27:51,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:27:51,710 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:51,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 202 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:27:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-18 18:27:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 771. [2022-11-18 18:27:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 602 states have (on average 1.1794019933554818) internal successors, (710), 603 states have internal predecessors, (710), 111 states have call successors, (111), 45 states have call predecessors, (111), 51 states have return successors, (139), 122 states have call predecessors, (139), 111 states have call successors, (139) [2022-11-18 18:27:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 960 transitions. [2022-11-18 18:27:51,801 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 960 transitions. Word has length 133 [2022-11-18 18:27:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:51,801 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 960 transitions. [2022-11-18 18:27:51,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:27:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 960 transitions. [2022-11-18 18:27:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-18 18:27:51,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:51,803 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 9, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:51,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:52,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 18:27:52,010 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:52,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 4 times [2022-11-18 18:27:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189321993] [2022-11-18 18:27:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:52,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:52,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:52,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118189734] [2022-11-18 18:27:52,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:27:52,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:52,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:52,021 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:52,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 18:27:52,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:27:52,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:52,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:27:52,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 151 proven. 43 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-11-18 18:27:52,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-18 18:27:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:52,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189321993] [2022-11-18 18:27:52,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:52,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118189734] [2022-11-18 18:27:52,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118189734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:52,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:52,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-11-18 18:27:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636082061] [2022-11-18 18:27:52,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:52,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:27:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:27:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:27:52,890 INFO L87 Difference]: Start difference. First operand 771 states and 960 transitions. Second operand has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-18 18:27:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:53,871 INFO L93 Difference]: Finished difference Result 1781 states and 2341 transitions. [2022-11-18 18:27:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:27:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 143 [2022-11-18 18:27:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:53,878 INFO L225 Difference]: With dead ends: 1781 [2022-11-18 18:27:53,879 INFO L226 Difference]: Without dead ends: 1112 [2022-11-18 18:27:53,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:27:53,883 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 181 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:53,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 310 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:27:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-18 18:27:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 874. [2022-11-18 18:27:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 676 states have (on average 1.1701183431952662) internal successors, (791), 682 states have internal predecessors, (791), 130 states have call successors, (130), 48 states have call predecessors, (130), 61 states have return successors, (188), 143 states have call predecessors, (188), 130 states have call successors, (188) [2022-11-18 18:27:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1109 transitions. [2022-11-18 18:27:53,960 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1109 transitions. Word has length 143 [2022-11-18 18:27:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:53,961 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1109 transitions. [2022-11-18 18:27:53,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-18 18:27:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1109 transitions. [2022-11-18 18:27:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 18:27:53,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:53,963 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:53,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-18 18:27:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:54,169 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2022-11-18 18:27:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:54,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289768106] [2022-11-18 18:27:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:54,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:54,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519689419] [2022-11-18 18:27:54,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:54,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:54,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:54,184 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:54,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 18:27:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:27:54,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-18 18:27:54,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-18 18:27:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:55,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289768106] [2022-11-18 18:27:55,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:55,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519689419] [2022-11-18 18:27:55,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519689419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:55,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:55,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-11-18 18:27:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701176305] [2022-11-18 18:27:55,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:55,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:27:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:27:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:27:55,257 INFO L87 Difference]: Start difference. First operand 874 states and 1109 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-18 18:27:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:55,988 INFO L93 Difference]: Finished difference Result 1783 states and 2340 transitions. [2022-11-18 18:27:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:27:55,989 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) Word has length 146 [2022-11-18 18:27:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:55,994 INFO L225 Difference]: With dead ends: 1783 [2022-11-18 18:27:55,994 INFO L226 Difference]: Without dead ends: 922 [2022-11-18 18:27:55,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 270 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:27:55,999 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 97 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:55,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 264 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:27:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-18 18:27:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 820. [2022-11-18 18:27:56,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 638 states have (on average 1.1739811912225706) internal successors, (749), 641 states have internal predecessors, (749), 118 states have call successors, (118), 47 states have call predecessors, (118), 57 states have return successors, (166), 131 states have call predecessors, (166), 118 states have call successors, (166) [2022-11-18 18:27:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1033 transitions. [2022-11-18 18:27:56,081 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1033 transitions. Word has length 146 [2022-11-18 18:27:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:56,082 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1033 transitions. [2022-11-18 18:27:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-18 18:27:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1033 transitions. [2022-11-18 18:27:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-18 18:27:56,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:56,084 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 9, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:56,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:56,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:56,290 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:27:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1077439367, now seen corresponding path program 5 times [2022-11-18 18:27:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:56,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410186139] [2022-11-18 18:27:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:56,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:56,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330278115] [2022-11-18 18:27:56,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:27:56,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:56,303 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:56,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 18:27:56,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 18:27:56,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:56,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 18:27:56,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 150 proven. 33 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-18 18:27:56,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 144 proven. 22 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 18:28:05,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:05,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410186139] [2022-11-18 18:28:05,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:05,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330278115] [2022-11-18 18:28:05,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330278115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:05,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:05,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 34 [2022-11-18 18:28:05,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263212549] [2022-11-18 18:28:05,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 18:28:05,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:05,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 18:28:05,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1070, Unknown=3, NotChecked=0, Total=1190 [2022-11-18 18:28:05,126 INFO L87 Difference]: Start difference. First operand 820 states and 1033 transitions. Second operand has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 31 states have internal predecessors, (97), 14 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-11-18 18:28:13,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:28:14,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-18 18:28:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:17,930 INFO L93 Difference]: Finished difference Result 1127 states and 1463 transitions. [2022-11-18 18:28:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 18:28:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 31 states have internal predecessors, (97), 14 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 153 [2022-11-18 18:28:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:17,943 INFO L225 Difference]: With dead ends: 1127 [2022-11-18 18:28:17,943 INFO L226 Difference]: Without dead ends: 1126 [2022-11-18 18:28:17,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=471, Invalid=3816, Unknown=3, NotChecked=0, Total=4290 [2022-11-18 18:28:17,955 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 281 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:17,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 721 Invalid, 1972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1746 Invalid, 0 Unknown, 121 Unchecked, 9.5s Time] [2022-11-18 18:28:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-18 18:28:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 985. [2022-11-18 18:28:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 771 states have (on average 1.191958495460441) internal successors, (919), 769 states have internal predecessors, (919), 140 states have call successors, (140), 55 states have call predecessors, (140), 67 states have return successors, (226), 160 states have call predecessors, (226), 140 states have call successors, (226) [2022-11-18 18:28:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1285 transitions. [2022-11-18 18:28:18,089 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1285 transitions. Word has length 153 [2022-11-18 18:28:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:18,092 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1285 transitions. [2022-11-18 18:28:18,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.8529411764705883) internal successors, (97), 31 states have internal predecessors, (97), 14 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2022-11-18 18:28:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1285 transitions. [2022-11-18 18:28:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 18:28:18,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:18,095 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:18,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:18,301 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2022-11-18 18:28:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478667768] [2022-11-18 18:28:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:18,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:18,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459333890] [2022-11-18 18:28:18,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:28:18,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:18,315 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:18,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 18:28:18,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:28:18,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:18,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:28:18,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-18 18:28:18,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-18 18:28:18,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:18,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478667768] [2022-11-18 18:28:18,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:18,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459333890] [2022-11-18 18:28:18,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459333890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:18,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:18,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:28:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217168372] [2022-11-18 18:28:18,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:28:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:28:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:28:18,816 INFO L87 Difference]: Start difference. First operand 985 states and 1285 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-18 18:28:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:19,176 INFO L93 Difference]: Finished difference Result 1122 states and 1457 transitions. [2022-11-18 18:28:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:28:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 156 [2022-11-18 18:28:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:19,183 INFO L225 Difference]: With dead ends: 1122 [2022-11-18 18:28:19,183 INFO L226 Difference]: Without dead ends: 1121 [2022-11-18 18:28:19,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:28:19,185 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 90 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:19,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 295 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:28:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-11-18 18:28:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1059. [2022-11-18 18:28:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 834 states have (on average 1.1750599520383693) internal successors, (980), 829 states have internal predecessors, (980), 151 states have call successors, (151), 55 states have call predecessors, (151), 67 states have return successors, (237), 174 states have call predecessors, (237), 151 states have call successors, (237) [2022-11-18 18:28:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1368 transitions. [2022-11-18 18:28:19,344 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1368 transitions. Word has length 156 [2022-11-18 18:28:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:19,344 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1368 transitions. [2022-11-18 18:28:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-18 18:28:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1368 transitions. [2022-11-18 18:28:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 18:28:19,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:19,346 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 9, 9, 9, 9, 9, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:19,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-18 18:28:19,552 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 495551865, now seen corresponding path program 6 times [2022-11-18 18:28:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043598398] [2022-11-18 18:28:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:19,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:19,565 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:19,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255981865] [2022-11-18 18:28:19,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:28:19,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:19,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:19,567 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:19,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 18:28:19,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 18:28:19,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:19,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:28:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 194 proven. 15 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-18 18:28:19,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:26,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043598398] [2022-11-18 18:28:26,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255981865] [2022-11-18 18:28:26,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255981865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:26,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:28:26,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-18 18:28:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901315948] [2022-11-18 18:28:26,531 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:28:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:28:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:28:26,533 INFO L87 Difference]: Start difference. First operand 1059 states and 1368 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:28:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:27,542 INFO L93 Difference]: Finished difference Result 1203 states and 1606 transitions. [2022-11-18 18:28:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:28:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 173 [2022-11-18 18:28:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:27,549 INFO L225 Difference]: With dead ends: 1203 [2022-11-18 18:28:27,549 INFO L226 Difference]: Without dead ends: 1202 [2022-11-18 18:28:27,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:28:27,551 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:27,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 284 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:28:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-18 18:28:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1107. [2022-11-18 18:28:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 874 states have (on average 1.1670480549199085) internal successors, (1020), 865 states have internal predecessors, (1020), 151 states have call successors, (151), 55 states have call predecessors, (151), 75 states have return successors, (262), 186 states have call predecessors, (262), 151 states have call successors, (262) [2022-11-18 18:28:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1433 transitions. [2022-11-18 18:28:27,720 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1433 transitions. Word has length 173 [2022-11-18 18:28:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:27,721 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1433 transitions. [2022-11-18 18:28:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 18:28:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1433 transitions. [2022-11-18 18:28:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-18 18:28:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:27,723 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:27,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:27,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 18:28:27,930 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2022-11-18 18:28:27,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554711746] [2022-11-18 18:28:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:27,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:27,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578555646] [2022-11-18 18:28:27,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:28:27,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:27,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:27,941 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:27,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 18:28:28,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:28:28,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:28,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:28:28,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 18:28:28,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-18 18:28:28,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:28,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554711746] [2022-11-18 18:28:28,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:28,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578555646] [2022-11-18 18:28:28,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578555646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:28,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:28,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-18 18:28:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281456219] [2022-11-18 18:28:28,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:28,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:28:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:28:28,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:28:28,394 INFO L87 Difference]: Start difference. First operand 1107 states and 1433 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:28:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:29,245 INFO L93 Difference]: Finished difference Result 1215 states and 1578 transitions. [2022-11-18 18:28:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:28:29,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 166 [2022-11-18 18:28:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:29,252 INFO L225 Difference]: With dead ends: 1215 [2022-11-18 18:28:29,252 INFO L226 Difference]: Without dead ends: 1214 [2022-11-18 18:28:29,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:28:29,253 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:29,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 597 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:28:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-11-18 18:28:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1201. [2022-11-18 18:28:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 947 states have (on average 1.1668426610348468) internal successors, (1105), 936 states have internal predecessors, (1105), 162 states have call successors, (162), 60 states have call predecessors, (162), 85 states have return successors, (293), 204 states have call predecessors, (293), 162 states have call successors, (293) [2022-11-18 18:28:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1560 transitions. [2022-11-18 18:28:29,387 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1560 transitions. Word has length 166 [2022-11-18 18:28:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:29,388 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1560 transitions. [2022-11-18 18:28:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 18:28:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1560 transitions. [2022-11-18 18:28:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 18:28:29,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:29,390 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 8, 8, 8, 8, 8, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:29,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-18 18:28:29,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-18 18:28:29,596 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1038609863, now seen corresponding path program 7 times [2022-11-18 18:28:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:29,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655498789] [2022-11-18 18:28:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:29,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:29,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:29,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007866798] [2022-11-18 18:28:29,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:28:29,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:29,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:29,617 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:29,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 18:28:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:29,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:28:29,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 205 proven. 40 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-18 18:28:30,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 205 proven. 41 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-18 18:28:30,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:30,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655498789] [2022-11-18 18:28:30,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:30,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007866798] [2022-11-18 18:28:30,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007866798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:30,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:30,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2022-11-18 18:28:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771613468] [2022-11-18 18:28:30,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:28:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:28:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:28:30,795 INFO L87 Difference]: Start difference. First operand 1201 states and 1560 transitions. Second operand has 24 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 21 states have internal predecessors, (91), 13 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-18 18:28:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:32,412 INFO L93 Difference]: Finished difference Result 2393 states and 3131 transitions. [2022-11-18 18:28:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:28:32,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 21 states have internal predecessors, (91), 13 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) Word has length 173 [2022-11-18 18:28:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:32,419 INFO L225 Difference]: With dead ends: 2393 [2022-11-18 18:28:32,419 INFO L226 Difference]: Without dead ends: 1302 [2022-11-18 18:28:32,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 319 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 18:28:32,426 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 157 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:32,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 569 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:28:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-11-18 18:28:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1213. [2022-11-18 18:28:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 956 states have (on average 1.1569037656903767) internal successors, (1106), 946 states have internal predecessors, (1106), 163 states have call successors, (163), 63 states have call predecessors, (163), 87 states have return successors, (267), 203 states have call predecessors, (267), 163 states have call successors, (267) [2022-11-18 18:28:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1536 transitions. [2022-11-18 18:28:32,606 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1536 transitions. Word has length 173 [2022-11-18 18:28:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:32,607 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1536 transitions. [2022-11-18 18:28:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 21 states have internal predecessors, (91), 13 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-18 18:28:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1536 transitions. [2022-11-18 18:28:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-18 18:28:32,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:32,609 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:32,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-18 18:28:32,817 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2022-11-18 18:28:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344400405] [2022-11-18 18:28:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:32,829 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:32,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015318910] [2022-11-18 18:28:32,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:28:32,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:32,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:32,831 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:32,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 18:28:32,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:28:32,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:32,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:28:32,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-18 18:28:33,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:28:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344400405] [2022-11-18 18:28:33,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015318910] [2022-11-18 18:28:33,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015318910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:33,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:33,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:28:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905288867] [2022-11-18 18:28:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:28:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:28:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:28:33,165 INFO L87 Difference]: Start difference. First operand 1213 states and 1536 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-18 18:28:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:33,646 INFO L93 Difference]: Finished difference Result 2279 states and 2957 transitions. [2022-11-18 18:28:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:28:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 169 [2022-11-18 18:28:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:33,653 INFO L225 Difference]: With dead ends: 2279 [2022-11-18 18:28:33,654 INFO L226 Difference]: Without dead ends: 1342 [2022-11-18 18:28:33,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:28:33,658 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 55 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:33,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 220 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:28:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-18 18:28:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1215. [2022-11-18 18:28:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 957 states have (on average 1.1567398119122256) internal successors, (1107), 948 states have internal predecessors, (1107), 163 states have call successors, (163), 63 states have call predecessors, (163), 88 states have return successors, (280), 203 states have call predecessors, (280), 163 states have call successors, (280) [2022-11-18 18:28:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1550 transitions. [2022-11-18 18:28:33,812 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1550 transitions. Word has length 169 [2022-11-18 18:28:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:33,812 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1550 transitions. [2022-11-18 18:28:33,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-18 18:28:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1550 transitions. [2022-11-18 18:28:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-18 18:28:33,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:33,814 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:33,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-18 18:28:34,019 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2022-11-18 18:28:34,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:34,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910490960] [2022-11-18 18:28:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:34,031 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:34,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755698629] [2022-11-18 18:28:34,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:28:34,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:34,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:34,033 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:34,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 18:28:34,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:28:34,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:34,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:28:34,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-18 18:28:34,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-18 18:28:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910490960] [2022-11-18 18:28:34,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:34,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755698629] [2022-11-18 18:28:34,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755698629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:34,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:34,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 18:28:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712389435] [2022-11-18 18:28:34,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:34,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:28:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:28:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:28:34,662 INFO L87 Difference]: Start difference. First operand 1215 states and 1550 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-18 18:28:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:35,167 INFO L93 Difference]: Finished difference Result 1217 states and 1550 transitions. [2022-11-18 18:28:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:28:35,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 179 [2022-11-18 18:28:35,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:35,175 INFO L225 Difference]: With dead ends: 1217 [2022-11-18 18:28:35,175 INFO L226 Difference]: Without dead ends: 1216 [2022-11-18 18:28:35,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:28:35,177 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 72 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:35,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 499 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:28:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-11-18 18:28:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1215. [2022-11-18 18:28:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 957 states have (on average 1.148380355276907) internal successors, (1099), 948 states have internal predecessors, (1099), 163 states have call successors, (163), 63 states have call predecessors, (163), 88 states have return successors, (280), 203 states have call predecessors, (280), 163 states have call successors, (280) [2022-11-18 18:28:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1542 transitions. [2022-11-18 18:28:35,322 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1542 transitions. Word has length 179 [2022-11-18 18:28:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:35,322 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1542 transitions. [2022-11-18 18:28:35,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-18 18:28:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1542 transitions. [2022-11-18 18:28:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 18:28:35,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:35,324 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:35,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 18:28:35,531 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2022-11-18 18:28:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614781326] [2022-11-18 18:28:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:35,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:35,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:35,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035916345] [2022-11-18 18:28:35,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:28:35,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:35,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:35,543 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:35,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 18:28:35,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:28:35,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:35,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:28:35,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-18 18:28:35,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 18:28:36,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614781326] [2022-11-18 18:28:36,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:36,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035916345] [2022-11-18 18:28:36,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035916345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:36,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:36,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-11-18 18:28:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012346965] [2022-11-18 18:28:36,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:28:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:36,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:28:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:28:36,538 INFO L87 Difference]: Start difference. First operand 1215 states and 1542 transitions. Second operand has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 18:28:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:37,589 INFO L93 Difference]: Finished difference Result 2473 states and 3283 transitions. [2022-11-18 18:28:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:28:37,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 176 [2022-11-18 18:28:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:37,613 INFO L225 Difference]: With dead ends: 2473 [2022-11-18 18:28:37,613 INFO L226 Difference]: Without dead ends: 1585 [2022-11-18 18:28:37,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 331 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:28:37,618 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 111 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:37,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 718 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:28:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-18 18:28:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1513. [2022-11-18 18:28:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1191 states have (on average 1.1612090680100755) internal successors, (1383), 1173 states have internal predecessors, (1383), 216 states have call successors, (216), 74 states have call predecessors, (216), 99 states have return successors, (376), 265 states have call predecessors, (376), 216 states have call successors, (376) [2022-11-18 18:28:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1975 transitions. [2022-11-18 18:28:37,776 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1975 transitions. Word has length 176 [2022-11-18 18:28:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:37,777 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 1975 transitions. [2022-11-18 18:28:37,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 18:28:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1975 transitions. [2022-11-18 18:28:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-18 18:28:37,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:37,780 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:37,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:37,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:37,987 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2022-11-18 18:28:37,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:37,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225550665] [2022-11-18 18:28:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:37,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:37,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6057712] [2022-11-18 18:28:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:37,998 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:37,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 18:28:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:38,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:28:38,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-18 18:28:38,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:28:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225550665] [2022-11-18 18:28:38,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6057712] [2022-11-18 18:28:38,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6057712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:38,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:38,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:28:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817058471] [2022-11-18 18:28:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:28:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:28:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:28:38,179 INFO L87 Difference]: Start difference. First operand 1513 states and 1975 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:28:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:38,334 INFO L93 Difference]: Finished difference Result 1674 states and 2181 transitions. [2022-11-18 18:28:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:28:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 197 [2022-11-18 18:28:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:38,343 INFO L225 Difference]: With dead ends: 1674 [2022-11-18 18:28:38,343 INFO L226 Difference]: Without dead ends: 1671 [2022-11-18 18:28:38,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:28:38,345 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:38,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 183 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:28:38,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-18 18:28:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1517. [2022-11-18 18:28:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1193 states have (on average 1.1609388097233864) internal successors, (1385), 1177 states have internal predecessors, (1385), 216 states have call successors, (216), 74 states have call predecessors, (216), 101 states have return successors, (399), 265 states have call predecessors, (399), 216 states have call successors, (399) [2022-11-18 18:28:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2000 transitions. [2022-11-18 18:28:38,474 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2000 transitions. Word has length 197 [2022-11-18 18:28:38,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:38,474 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2000 transitions. [2022-11-18 18:28:38,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:28:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2000 transitions. [2022-11-18 18:28:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-18 18:28:38,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:38,476 INFO L195 NwaCegarLoop]: trace histogram [21, 18, 11, 11, 11, 11, 10, 9, 9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:38,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-11-18 18:28:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:38,676 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1918041, now seen corresponding path program 8 times [2022-11-18 18:28:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:38,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173842403] [2022-11-18 18:28:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:38,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:38,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989240044] [2022-11-18 18:28:38,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:28:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:38,691 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:38,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-18 18:28:38,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:28:38,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:38,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:28:38,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-18 18:28:39,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 300 proven. 96 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-18 18:28:39,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:39,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173842403] [2022-11-18 18:28:39,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:39,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989240044] [2022-11-18 18:28:39,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989240044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:39,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:39,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2022-11-18 18:28:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232855653] [2022-11-18 18:28:39,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:39,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:28:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:28:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:28:39,965 INFO L87 Difference]: Start difference. First operand 1517 states and 2000 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 18:28:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:40,918 INFO L93 Difference]: Finished difference Result 3099 states and 4124 transitions. [2022-11-18 18:28:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:28:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) Word has length 213 [2022-11-18 18:28:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:40,926 INFO L225 Difference]: With dead ends: 3099 [2022-11-18 18:28:40,926 INFO L226 Difference]: Without dead ends: 1614 [2022-11-18 18:28:40,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 402 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:28:40,933 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 85 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:40,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 271 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:28:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-18 18:28:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1515. [2022-11-18 18:28:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1192 states have (on average 1.1401006711409396) internal successors, (1359), 1175 states have internal predecessors, (1359), 216 states have call successors, (216), 74 states have call predecessors, (216), 100 states have return successors, (369), 265 states have call predecessors, (369), 216 states have call successors, (369) [2022-11-18 18:28:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1944 transitions. [2022-11-18 18:28:41,095 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1944 transitions. Word has length 213 [2022-11-18 18:28:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:41,095 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1944 transitions. [2022-11-18 18:28:41,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-18 18:28:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1944 transitions. [2022-11-18 18:28:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-18 18:28:41,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:41,097 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:41,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-11-18 18:28:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:41,297 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2022-11-18 18:28:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:41,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753561448] [2022-11-18 18:28:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:41,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:41,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107324639] [2022-11-18 18:28:41,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:28:41,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:41,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:41,310 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:41,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-18 18:28:41,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:28:41,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:41,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:28:41,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-18 18:28:41,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-18 18:28:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753561448] [2022-11-18 18:28:42,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107324639] [2022-11-18 18:28:42,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107324639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:42,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:42,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-11-18 18:28:42,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220884759] [2022-11-18 18:28:42,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:28:42,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:28:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:28:42,125 INFO L87 Difference]: Start difference. First operand 1515 states and 1944 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-18 18:28:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:43,147 INFO L93 Difference]: Finished difference Result 2730 states and 3542 transitions. [2022-11-18 18:28:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:28:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 207 [2022-11-18 18:28:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:43,154 INFO L225 Difference]: With dead ends: 2730 [2022-11-18 18:28:43,155 INFO L226 Difference]: Without dead ends: 1524 [2022-11-18 18:28:43,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 393 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:28:43,160 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:43,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 347 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:28:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-18 18:28:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1511. [2022-11-18 18:28:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1188 states have (on average 1.1405723905723906) internal successors, (1355), 1173 states have internal predecessors, (1355), 214 states have call successors, (214), 76 states have call predecessors, (214), 102 states have return successors, (359), 261 states have call predecessors, (359), 214 states have call successors, (359) [2022-11-18 18:28:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1928 transitions. [2022-11-18 18:28:43,343 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1928 transitions. Word has length 207 [2022-11-18 18:28:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:43,344 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1928 transitions. [2022-11-18 18:28:43,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-18 18:28:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1928 transitions. [2022-11-18 18:28:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-18 18:28:43,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:43,345 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 11, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:43,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-11-18 18:28:43,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-18 18:28:43,546 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:43,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash 220750957, now seen corresponding path program 3 times [2022-11-18 18:28:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:43,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147088929] [2022-11-18 18:28:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:43,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:43,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107789877] [2022-11-18 18:28:43,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:28:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:43,558 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:43,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-18 18:28:43,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:28:43,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:43,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:28:43,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 293 proven. 40 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-18 18:28:45,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:48,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:48,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147088929] [2022-11-18 18:28:48,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:48,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107789877] [2022-11-18 18:28:48,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107789877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:48,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:28:48,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-18 18:28:48,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052354002] [2022-11-18 18:28:48,169 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:48,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:28:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:48,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:28:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:28:48,172 INFO L87 Difference]: Start difference. First operand 1511 states and 1928 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:28:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:51,298 INFO L93 Difference]: Finished difference Result 1684 states and 2254 transitions. [2022-11-18 18:28:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:28:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 214 [2022-11-18 18:28:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:51,306 INFO L225 Difference]: With dead ends: 1684 [2022-11-18 18:28:51,306 INFO L226 Difference]: Without dead ends: 1683 [2022-11-18 18:28:51,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:28:51,308 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 49 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 400 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:28:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-18 18:28:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1541. [2022-11-18 18:28:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1212 states have (on average 1.1377887788778878) internal successors, (1379), 1197 states have internal predecessors, (1379), 214 states have call successors, (214), 76 states have call predecessors, (214), 108 states have return successors, (376), 267 states have call predecessors, (376), 214 states have call successors, (376) [2022-11-18 18:28:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1969 transitions. [2022-11-18 18:28:51,521 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1969 transitions. Word has length 214 [2022-11-18 18:28:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:51,522 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 1969 transitions. [2022-11-18 18:28:51,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:28:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1969 transitions. [2022-11-18 18:28:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-18 18:28:51,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:51,525 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:51,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:51,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-11-18 18:28:51,732 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:51,732 INFO L85 PathProgramCache]: Analyzing trace with hash -639257203, now seen corresponding path program 4 times [2022-11-18 18:28:51,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:51,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659071529] [2022-11-18 18:28:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:51,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842817085] [2022-11-18 18:28:51,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:28:51,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:51,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:51,746 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:51,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-18 18:28:51,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:28:51,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:51,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:28:51,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 141 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-18 18:28:52,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 142 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-11-18 18:28:52,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659071529] [2022-11-18 18:28:52,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842817085] [2022-11-18 18:28:52,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842817085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:52,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:52,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2022-11-18 18:28:52,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278269315] [2022-11-18 18:28:52,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:52,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:28:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:28:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:28:52,894 INFO L87 Difference]: Start difference. First operand 1541 states and 1969 transitions. Second operand has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-18 18:28:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:54,231 INFO L93 Difference]: Finished difference Result 3466 states and 4604 transitions. [2022-11-18 18:28:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:28:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) Word has length 224 [2022-11-18 18:28:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:54,240 INFO L225 Difference]: With dead ends: 3466 [2022-11-18 18:28:54,240 INFO L226 Difference]: Without dead ends: 2235 [2022-11-18 18:28:54,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 427 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:28:54,247 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 224 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:54,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 311 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:28:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-11-18 18:28:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1920. [2022-11-18 18:28:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1511 states have (on average 1.1455989410986103) internal successors, (1731), 1486 states have internal predecessors, (1731), 279 states have call successors, (279), 89 states have call predecessors, (279), 123 states have return successors, (504), 344 states have call predecessors, (504), 279 states have call successors, (504) [2022-11-18 18:28:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2514 transitions. [2022-11-18 18:28:54,470 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2514 transitions. Word has length 224 [2022-11-18 18:28:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:54,470 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2514 transitions. [2022-11-18 18:28:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2022-11-18 18:28:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2514 transitions. [2022-11-18 18:28:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-18 18:28:54,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:54,473 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 11, 11, 11, 11, 11, 10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:54,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:54,680 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:28:54,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash 478761785, now seen corresponding path program 9 times [2022-11-18 18:28:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:54,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375162147] [2022-11-18 18:28:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:54,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:28:54,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298907772] [2022-11-18 18:28:54,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:28:54,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:28:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:54,695 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:28:54,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-18 18:28:54,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:28:54,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:28:54,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 18:28:54,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 418 proven. 99 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-11-18 18:28:56,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375162147] [2022-11-18 18:28:57,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:28:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298907772] [2022-11-18 18:28:57,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298907772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:57,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:28:57,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-11-18 18:28:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019001186] [2022-11-18 18:28:57,158 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:28:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:28:57,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:28:57,160 INFO L87 Difference]: Start difference. First operand 1920 states and 2514 transitions. Second operand has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 9 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-18 18:28:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:59,508 INFO L93 Difference]: Finished difference Result 4577 states and 6438 transitions. [2022-11-18 18:28:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 18:28:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 9 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 223 [2022-11-18 18:28:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:59,515 INFO L225 Difference]: With dead ends: 4577 [2022-11-18 18:28:59,516 INFO L226 Difference]: Without dead ends: 2797 [2022-11-18 18:28:59,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 18:28:59,520 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 140 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:59,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 737 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1208 Invalid, 0 Unknown, 179 Unchecked, 1.3s Time] [2022-11-18 18:28:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-11-18 18:28:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2151. [2022-11-18 18:28:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1689 states have (on average 1.14801657785672) internal successors, (1939), 1655 states have internal predecessors, (1939), 318 states have call successors, (318), 101 states have call predecessors, (318), 137 states have return successors, (626), 394 states have call predecessors, (626), 318 states have call successors, (626) [2022-11-18 18:28:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2883 transitions. [2022-11-18 18:28:59,841 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2883 transitions. Word has length 223 [2022-11-18 18:28:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:59,842 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 2883 transitions. [2022-11-18 18:28:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 9 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-18 18:28:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2883 transitions. [2022-11-18 18:28:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:28:59,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:59,845 INFO L195 NwaCegarLoop]: trace histogram [24, 21, 12, 12, 12, 12, 12, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:59,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:00,052 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:29:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1875748746, now seen corresponding path program 5 times [2022-11-18 18:29:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702866647] [2022-11-18 18:29:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:00,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:00,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:29:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592252909] [2022-11-18 18:29:00,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:29:00,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:00,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:00,063 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:00,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-18 18:29:00,224 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 18:29:00,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:00,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:29:00,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-11-18 18:29:00,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:00,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702866647] [2022-11-18 18:29:00,377 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:29:00,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592252909] [2022-11-18 18:29:00,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592252909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:00,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:00,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:29:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762927375] [2022-11-18 18:29:00,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:29:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:29:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:29:00,379 INFO L87 Difference]: Start difference. First operand 2151 states and 2883 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:29:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:00,933 INFO L93 Difference]: Finished difference Result 3918 states and 5332 transitions. [2022-11-18 18:29:00,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:29:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 242 [2022-11-18 18:29:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:00,939 INFO L225 Difference]: With dead ends: 3918 [2022-11-18 18:29:00,939 INFO L226 Difference]: Without dead ends: 2112 [2022-11-18 18:29:00,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:29:00,945 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:00,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 304 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:29:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-11-18 18:29:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2107. [2022-11-18 18:29:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1657 states have (on average 1.147254073627037) internal successors, (1901), 1621 states have internal predecessors, (1901), 310 states have call successors, (310), 99 states have call predecessors, (310), 133 states have return successors, (584), 386 states have call predecessors, (584), 310 states have call successors, (584) [2022-11-18 18:29:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2795 transitions. [2022-11-18 18:29:01,182 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2795 transitions. Word has length 242 [2022-11-18 18:29:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:01,182 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 2795 transitions. [2022-11-18 18:29:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:29:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2795 transitions. [2022-11-18 18:29:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-18 18:29:01,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:01,186 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:01,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:01,393 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 18:29:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 473879306, now seen corresponding path program 6 times [2022-11-18 18:29:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:01,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368295355] [2022-11-18 18:29:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:01,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:01,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:29:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228886409] [2022-11-18 18:29:01,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:29:01,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:01,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:01,406 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:01,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-18 18:29:01,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-18 18:29:01,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 18:29:01,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368295355] [2022-11-18 18:29:02,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:29:02,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228886409] [2022-11-18 18:29:02,977 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 18:29:02,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:03,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:03,185 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Div with more than two parameters at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:569) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:509) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:421) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:310) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:200) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:129) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminateCompat(PartialQuantifierElimination.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.constructQuantifiedFormula(TermDomainOperationProvider.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:196) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-18 18:29:03,200 INFO L158 Benchmark]: Toolchain (without parser) took 126502.94ms. Allocated memory was 109.1MB in the beginning and 362.8MB in the end (delta: 253.8MB). Free memory was 79.7MB in the beginning and 296.2MB in the end (delta: -216.5MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-11-18 18:29:03,200 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:29:03,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.26ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 85.6MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:29:03,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:29:03,203 INFO L158 Benchmark]: Boogie Preprocessor took 51.96ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:29:03,203 INFO L158 Benchmark]: RCFGBuilder took 467.73ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 70.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:29:03,208 INFO L158 Benchmark]: TraceAbstraction took 125570.06ms. Allocated memory was 109.1MB in the beginning and 362.8MB in the end (delta: 253.8MB). Free memory was 69.8MB in the beginning and 296.2MB in the end (delta: -226.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-11-18 18:29:03,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.26ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 85.6MB in the end (delta: -5.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.96ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.73ms. Allocated memory is still 109.1MB. Free memory was 83.1MB in the beginning and 70.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 125570.06ms. Allocated memory was 109.1MB in the beginning and 362.8MB in the end (delta: 253.8MB). Free memory was 69.8MB in the beginning and 296.2MB in the end (delta: -226.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Div with more than two parameters de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Div with more than two parameters: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:569) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-18 18:29:03,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f86a30ca-258d-4074-a6f6-adb7d9077a3d/bin/uautomizer-TMbwUNV5ro/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Div with more than two parameters