./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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-6b4ec56 [2022-11-20 10:47:27,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:47:27,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:47:27,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:47:27,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:47:27,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:47:27,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:47:27,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:47:27,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:47:27,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:47:27,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:47:27,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:47:27,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:47:27,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:47:27,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:47:27,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:47:27,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:47:27,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:47:27,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:47:27,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:47:27,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:47:27,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:47:27,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:47:27,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:47:27,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:47:27,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:47:27,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:47:27,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:47:27,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:47:27,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:47:27,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:47:27,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:47:27,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:47:27,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:47:27,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:47:27,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:47:27,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:47:27,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:47:27,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:47:27,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:47:27,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:47:27,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 10:47:27,180 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:47:27,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:47:27,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:47:27,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:47:27,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:47:27,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:47:27,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:47:27,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:47:27,183 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:47:27,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:47:27,185 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:47:27,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:47:27,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:47:27,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:47:27,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:47:27,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:47:27,187 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:47:27,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:47:27,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:47:27,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:47:27,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:47:27,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:47:27,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:47:27,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:27,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:47:27,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:47:27,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:47:27,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:47:27,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:47:27,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:47:27,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:47:27,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:47:27,192 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_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-11-20 10:47:27,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:47:27,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:47:27,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:47:27,559 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:47:27,559 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:47:27,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-20 10:47:30,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:47:30,951 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:47:30,951 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-20 10:47:30,958 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/60a9fb22e/baca56e5210c445b80ed3944552d5020/FLAGc3a297b25 [2022-11-20 10:47:30,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/60a9fb22e/baca56e5210c445b80ed3944552d5020 [2022-11-20 10:47:30,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:47:30,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:47:30,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:30,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:47:30,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:47:30,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:30" (1/1) ... [2022-11-20 10:47:30,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792cf5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:30, skipping insertion in model container [2022-11-20 10:47:30,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:30" (1/1) ... [2022-11-20 10:47:31,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:47:31,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:47:31,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:31,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:47:31,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:31,260 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:47:31,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31 WrapperNode [2022-11-20 10:47:31,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:31,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:31,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:47:31,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:47:31,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,298 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-20 10:47:31,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:31,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:47:31,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:47:31,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:47:31,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:47:31,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:47:31,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:47:31,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:47:31,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (1/1) ... [2022-11-20 10:47:31,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:31,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:47:31,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:47:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-11-20 10:47:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-11-20 10:47:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-11-20 10:47:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-11-20 10:47:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:47:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:47:31,488 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:47:31,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:47:31,783 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:47:31,791 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:47:31,791 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:47:31,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:47:31 BoogieIcfgContainer [2022-11-20 10:47:31,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:47:31,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:47:31,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:47:31,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:47:31,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:47:30" (1/3) ... [2022-11-20 10:47:31,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ad71f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:47:31, skipping insertion in model container [2022-11-20 10:47:31,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:31" (2/3) ... [2022-11-20 10:47:31,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ad71f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:47:31, skipping insertion in model container [2022-11-20 10:47:31,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:47:31" (3/3) ... [2022-11-20 10:47:31,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-11-20 10:47:31,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:47:31,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 10:47:31,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:47:31,954 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;@70ebf780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:47:31,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-20 10:47:31,959 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) [2022-11-20 10:47:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:47:31,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:31,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:31,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2022-11-20 10:47:31,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:31,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886886928] [2022-11-20 10:47:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:31,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886886928] [2022-11-20 10:47:32,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886886928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:32,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:32,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:47:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229827993] [2022-11-20 10:47:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:32,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:47:32,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:47:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:47:32,230 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) [2022-11-20 10:47:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:32,273 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-11-20 10:47:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:47:32,275 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 [2022-11-20 10:47:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:32,285 INFO L225 Difference]: With dead ends: 114 [2022-11-20 10:47:32,286 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 10:47:32,293 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 [2022-11-20 10:47:32,297 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 [2022-11-20 10:47:32,298 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] [2022-11-20 10:47:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 10:47:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-20 10:47:32,346 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) [2022-11-20 10:47:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-11-20 10:47:32,353 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2022-11-20 10:47:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:32,354 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-11-20 10:47:32,354 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) [2022-11-20 10:47:32,354 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-11-20 10:47:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:47:32,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:32,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:32,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:47:32,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2022-11-20 10:47:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:32,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375087848] [2022-11-20 10:47:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:32,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375087848] [2022-11-20 10:47:32,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375087848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:32,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:32,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:47:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029029695] [2022-11-20 10:47:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:32,492 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) [2022-11-20 10:47:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:32,582 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-11-20 10:47:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:47:32,587 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 [2022-11-20 10:47:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:32,589 INFO L225 Difference]: With dead ends: 109 [2022-11-20 10:47:32,589 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 10:47:32,590 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 [2022-11-20 10:47:32,591 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 [2022-11-20 10:47:32,592 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] [2022-11-20 10:47:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 10:47:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-20 10:47:32,599 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) [2022-11-20 10:47:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-11-20 10:47:32,601 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2022-11-20 10:47:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:32,602 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-11-20 10:47:32,602 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) [2022-11-20 10:47:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-11-20 10:47:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:47:32,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:32,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:32,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:47:32,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2022-11-20 10:47:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:32,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708135397] [2022-11-20 10:47:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708135397] [2022-11-20 10:47:32,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708135397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:32,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:32,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:47:32,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543488243] [2022-11-20 10:47:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:32,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:32,769 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) [2022-11-20 10:47:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:32,941 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2022-11-20 10:47:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:32,942 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 [2022-11-20 10:47:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:32,945 INFO L225 Difference]: With dead ends: 155 [2022-11-20 10:47:32,945 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 10:47:32,946 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 [2022-11-20 10:47:32,948 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 329 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:47:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 10:47:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-11-20 10:47:32,963 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) [2022-11-20 10:47:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-11-20 10:47:32,965 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2022-11-20 10:47:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:32,966 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-11-20 10:47:32,966 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) [2022-11-20 10:47:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-11-20 10:47:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:47:32,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:32,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:32,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:47:32,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2022-11-20 10:47:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:32,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22519426] [2022-11-20 10:47:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:33,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22519426] [2022-11-20 10:47:33,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22519426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:33,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:47:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240005539] [2022-11-20 10:47:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:33,014 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) [2022-11-20 10:47:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:33,069 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-11-20 10:47:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:33,070 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 [2022-11-20 10:47:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:33,071 INFO L225 Difference]: With dead ends: 186 [2022-11-20 10:47:33,071 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 10:47:33,072 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 [2022-11-20 10:47:33,074 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:33,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 10:47:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-11-20 10:47:33,088 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) [2022-11-20 10:47:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-11-20 10:47:33,090 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2022-11-20 10:47:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-11-20 10:47:33,090 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) [2022-11-20 10:47:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-11-20 10:47:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:47:33,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:33,091 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:33,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:47:33,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2022-11-20 10:47:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:33,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148393757] [2022-11-20 10:47:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:47:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:33,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:33,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148393757] [2022-11-20 10:47:33,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148393757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:33,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:33,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:47:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232849069] [2022-11-20 10:47:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:33,242 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) [2022-11-20 10:47:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:33,420 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-11-20 10:47:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:33,420 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 [2022-11-20 10:47:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:33,423 INFO L225 Difference]: With dead ends: 226 [2022-11-20 10:47:33,423 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 10:47:33,438 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 [2022-11-20 10:47:33,445 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 [2022-11-20 10:47:33,445 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] [2022-11-20 10:47:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 10:47:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-11-20 10:47:33,474 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) [2022-11-20 10:47:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2022-11-20 10:47:33,476 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2022-11-20 10:47:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:33,476 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2022-11-20 10:47:33,477 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) [2022-11-20 10:47:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2022-11-20 10:47:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:47:33,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:33,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:33,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:47:33,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2022-11-20 10:47:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:33,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442524623] [2022-11-20 10:47:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:47:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:47:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:47:33,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:33,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442524623] [2022-11-20 10:47:33,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442524623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:33,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:33,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:47:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065418109] [2022-11-20 10:47:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:47:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:47:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:33,599 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) [2022-11-20 10:47:33,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:33,697 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2022-11-20 10:47:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:33,698 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 [2022-11-20 10:47:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:33,699 INFO L225 Difference]: With dead ends: 149 [2022-11-20 10:47:33,699 INFO L226 Difference]: Without dead ends: 148 [2022-11-20 10:47:33,700 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 [2022-11-20 10:47:33,701 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 [2022-11-20 10:47:33,701 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] [2022-11-20 10:47:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-20 10:47:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2022-11-20 10:47:33,713 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) [2022-11-20 10:47:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2022-11-20 10:47:33,715 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2022-11-20 10:47:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:33,716 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2022-11-20 10:47:33,716 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) [2022-11-20 10:47:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2022-11-20 10:47:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:47:33,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:33,717 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] [2022-11-20 10:47:33,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:47:33,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:33,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2022-11-20 10:47:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:33,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571657147] [2022-11-20 10:47:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:33,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:47:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:47:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:47:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:33,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571657147] [2022-11-20 10:47:33,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571657147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:33,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:33,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:47:33,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503445615] [2022-11-20 10:47:33,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:33,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:47:33,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:33,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:47:33,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:33,845 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) [2022-11-20 10:47:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:33,941 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2022-11-20 10:47:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:33,944 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 [2022-11-20 10:47:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:33,946 INFO L225 Difference]: With dead ends: 163 [2022-11-20 10:47:33,947 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 10:47:33,948 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 [2022-11-20 10:47:33,950 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 [2022-11-20 10:47:33,951 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] [2022-11-20 10:47:33,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 10:47:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2022-11-20 10:47:34,011 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) [2022-11-20 10:47:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2022-11-20 10:47:34,019 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2022-11-20 10:47:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:34,020 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2022-11-20 10:47:34,020 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) [2022-11-20 10:47:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2022-11-20 10:47:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 10:47:34,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:34,021 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] [2022-11-20 10:47:34,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:47:34,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2022-11-20 10:47:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:34,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221124615] [2022-11-20 10:47:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:47:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 10:47:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:47:34,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:34,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221124615] [2022-11-20 10:47:34,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221124615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:34,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:34,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:47:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130416899] [2022-11-20 10:47:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:34,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:47:34,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:47:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:47:34,142 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) [2022-11-20 10:47:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:34,305 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2022-11-20 10:47:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:47:34,306 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 [2022-11-20 10:47:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:34,307 INFO L225 Difference]: With dead ends: 292 [2022-11-20 10:47:34,308 INFO L226 Difference]: Without dead ends: 168 [2022-11-20 10:47:34,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:47:34,309 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:34,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 342 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:47:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-20 10:47:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2022-11-20 10:47:34,322 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) [2022-11-20 10:47:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2022-11-20 10:47:34,324 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2022-11-20 10:47:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:34,324 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2022-11-20 10:47:34,324 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) [2022-11-20 10:47:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2022-11-20 10:47:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 10:47:34,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:34,326 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] [2022-11-20 10:47:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:47:34,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2022-11-20 10:47:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832085063] [2022-11-20 10:47:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:34,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372007395] [2022-11-20 10:47:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:34,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:34,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:47:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:34,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:47:34,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:47:34,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:34,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:34,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832085063] [2022-11-20 10:47:34,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:34,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372007395] [2022-11-20 10:47:34,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372007395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:34,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:34,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:47:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107292794] [2022-11-20 10:47:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:34,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:47:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:47:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:47:34,499 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) [2022-11-20 10:47:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:34,566 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2022-11-20 10:47:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:34,566 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 [2022-11-20 10:47:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:34,568 INFO L225 Difference]: With dead ends: 203 [2022-11-20 10:47:34,568 INFO L226 Difference]: Without dead ends: 201 [2022-11-20 10:47:34,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:47:34,570 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-20 10:47:34,570 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] [2022-11-20 10:47:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-20 10:47:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-11-20 10:47:34,584 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) [2022-11-20 10:47:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2022-11-20 10:47:34,586 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2022-11-20 10:47:34,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:34,586 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2022-11-20 10:47:34,586 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) [2022-11-20 10:47:34,587 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2022-11-20 10:47:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 10:47:34,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:34,588 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] [2022-11-20 10:47:34,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:47:34,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:34,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2022-11-20 10:47:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:34,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122663501] [2022-11-20 10:47:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:34,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:34,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427443357] [2022-11-20 10:47:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:34,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:34,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:34,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:47:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:34,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:47:34,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:47:35,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122663501] [2022-11-20 10:47:37,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427443357] [2022-11-20 10:47:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427443357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:37,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:37,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-11-20 10:47:37,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672532061] [2022-11-20 10:47:37,826 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:37,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:47:37,827 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) [2022-11-20 10:47:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:37,974 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2022-11-20 10:47:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:47:37,976 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 [2022-11-20 10:47:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:37,978 INFO L225 Difference]: With dead ends: 257 [2022-11-20 10:47:37,978 INFO L226 Difference]: Without dead ends: 255 [2022-11-20 10:47:37,978 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 [2022-11-20 10:47:37,979 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 [2022-11-20 10:47:37,979 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] [2022-11-20 10:47:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-20 10:47:38,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-11-20 10:47:38,005 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) [2022-11-20 10:47:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-11-20 10:47:38,007 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2022-11-20 10:47:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:38,011 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-11-20 10:47:38,012 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) [2022-11-20 10:47:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-11-20 10:47:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 10:47:38,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:38,018 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] [2022-11-20 10:47:38,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:47:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:38,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2022-11-20 10:47:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:38,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617057622] [2022-11-20 10:47:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:38,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412617122] [2022-11-20 10:47:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:38,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:38,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:38,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:38,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:47:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:38,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:38,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:38,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:38,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617057622] [2022-11-20 10:47:38,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412617122] [2022-11-20 10:47:38,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412617122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:38,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:38,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335278326] [2022-11-20 10:47:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:38,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:38,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:38,340 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) [2022-11-20 10:47:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:38,404 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2022-11-20 10:47:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:38,405 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 [2022-11-20 10:47:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:38,411 INFO L225 Difference]: With dead ends: 217 [2022-11-20 10:47:38,411 INFO L226 Difference]: Without dead ends: 216 [2022-11-20 10:47:38,412 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 [2022-11-20 10:47:38,412 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 [2022-11-20 10:47:38,413 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] [2022-11-20 10:47:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-20 10:47:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2022-11-20 10:47:38,431 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) [2022-11-20 10:47:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-11-20 10:47:38,434 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2022-11-20 10:47:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:38,436 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-11-20 10:47:38,436 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) [2022-11-20 10:47:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-11-20 10:47:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:47:38,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:38,441 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] [2022-11-20 10:47:38,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:38,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:38,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2022-11-20 10:47:38,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:38,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925214193] [2022-11-20 10:47:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:38,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819939510] [2022-11-20 10:47:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:38,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:38,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:47:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:38,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:38,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:38,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:38,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925214193] [2022-11-20 10:47:38,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:38,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819939510] [2022-11-20 10:47:38,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819939510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:38,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:38,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789446868] [2022-11-20 10:47:38,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:38,763 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) [2022-11-20 10:47:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:38,815 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2022-11-20 10:47:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:47:38,816 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 [2022-11-20 10:47:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:38,820 INFO L225 Difference]: With dead ends: 213 [2022-11-20 10:47:38,820 INFO L226 Difference]: Without dead ends: 212 [2022-11-20 10:47:38,820 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 [2022-11-20 10:47:38,821 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 [2022-11-20 10:47:38,821 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] [2022-11-20 10:47:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-20 10:47:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-20 10:47:38,847 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) [2022-11-20 10:47:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2022-11-20 10:47:38,850 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2022-11-20 10:47:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:38,851 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2022-11-20 10:47:38,851 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) [2022-11-20 10:47:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2022-11-20 10:47:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 10:47:38,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:38,852 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] [2022-11-20 10:47:38,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:39,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:39,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2022-11-20 10:47:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:39,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390069163] [2022-11-20 10:47:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:39,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:39,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245039686] [2022-11-20 10:47:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:39,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:39,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:39,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:47:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:39,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:47:39,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390069163] [2022-11-20 10:47:39,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:39,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245039686] [2022-11-20 10:47:39,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245039686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:39,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:39,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147640528] [2022-11-20 10:47:39,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:39,220 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) [2022-11-20 10:47:39,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:39,281 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2022-11-20 10:47:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:39,282 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 [2022-11-20 10:47:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:39,284 INFO L225 Difference]: With dead ends: 218 [2022-11-20 10:47:39,284 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 10:47:39,285 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 [2022-11-20 10:47:39,286 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 [2022-11-20 10:47:39,286 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] [2022-11-20 10:47:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 10:47:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2022-11-20 10:47:39,302 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) [2022-11-20 10:47:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2022-11-20 10:47:39,305 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2022-11-20 10:47:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:39,305 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2022-11-20 10:47:39,305 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) [2022-11-20 10:47:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2022-11-20 10:47:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:47:39,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:39,307 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] [2022-11-20 10:47:39,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:39,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:47:39,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:39,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2022-11-20 10:47:39,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:39,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961563531] [2022-11-20 10:47:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:39,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:39,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41036145] [2022-11-20 10:47:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:39,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:39,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:39,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:47:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:39,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:47:39,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 10:47:39,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961563531] [2022-11-20 10:47:39,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:39,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41036145] [2022-11-20 10:47:39,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41036145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:39,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:39,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063279300] [2022-11-20 10:47:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:39,638 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) [2022-11-20 10:47:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:39,686 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2022-11-20 10:47:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:47:39,686 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 [2022-11-20 10:47:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:39,688 INFO L225 Difference]: With dead ends: 214 [2022-11-20 10:47:39,688 INFO L226 Difference]: Without dead ends: 213 [2022-11-20 10:47:39,689 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 [2022-11-20 10:47:39,690 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 [2022-11-20 10:47:39,690 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] [2022-11-20 10:47:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-20 10:47:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-11-20 10:47:39,704 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) [2022-11-20 10:47:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2022-11-20 10:47:39,707 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2022-11-20 10:47:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:39,707 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2022-11-20 10:47:39,708 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) [2022-11-20 10:47:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2022-11-20 10:47:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 10:47:39,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:39,709 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] [2022-11-20 10:47:39,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:47:39,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2022-11-20 10:47:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:39,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978590951] [2022-11-20 10:47:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:39,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:39,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736395857] [2022-11-20 10:47:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:39,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:39,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:39,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:47:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:39,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:47:39,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:40,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978590951] [2022-11-20 10:47:40,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736395857] [2022-11-20 10:47:40,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736395857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:40,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:40,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:47:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418475374] [2022-11-20 10:47:40,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:47:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:47:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:47:40,318 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) [2022-11-20 10:47:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:41,032 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2022-11-20 10:47:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:47:41,032 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 [2022-11-20 10:47:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:41,034 INFO L225 Difference]: With dead ends: 316 [2022-11-20 10:47:41,034 INFO L226 Difference]: Without dead ends: 315 [2022-11-20 10:47:41,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:47:41,035 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:41,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 589 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:47:41,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-20 10:47:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2022-11-20 10:47:41,051 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) [2022-11-20 10:47:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-11-20 10:47:41,053 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2022-11-20 10:47:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:41,054 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-11-20 10:47:41,054 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) [2022-11-20 10:47:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-11-20 10:47:41,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:47:41,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:41,055 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] [2022-11-20 10:47:41,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 10:47:41,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:47:41,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2022-11-20 10:47:41,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:41,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046730512] [2022-11-20 10:47:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:41,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:41,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525634755] [2022-11-20 10:47:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:41,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:41,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:41,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:47:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:41,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:47:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 10:47:41,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:41,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046730512] [2022-11-20 10:47:41,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525634755] [2022-11-20 10:47:41,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525634755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:41,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:41,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:47:41,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765810591] [2022-11-20 10:47:41,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:47:41,339 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) [2022-11-20 10:47:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:41,367 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-11-20 10:47:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:41,368 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 [2022-11-20 10:47:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:41,370 INFO L225 Difference]: With dead ends: 278 [2022-11-20 10:47:41,370 INFO L226 Difference]: Without dead ends: 277 [2022-11-20 10:47:41,371 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 [2022-11-20 10:47:41,371 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 [2022-11-20 10:47:41,372 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] [2022-11-20 10:47:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-20 10:47:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-11-20 10:47:41,390 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) [2022-11-20 10:47:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2022-11-20 10:47:41,392 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2022-11-20 10:47:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:41,393 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2022-11-20 10:47:41,393 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) [2022-11-20 10:47:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2022-11-20 10:47:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 10:47:41,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:41,395 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] [2022-11-20 10:47:41,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 10:47:41,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:41,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2022-11-20 10:47:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:41,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22168456] [2022-11-20 10:47:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:41,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:41,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036332552] [2022-11-20 10:47:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:41,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:41,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:41,611 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:47:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:41,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:47:41,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 10:47:41,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22168456] [2022-11-20 10:47:41,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036332552] [2022-11-20 10:47:41,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036332552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:41,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:41,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:47:41,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322388637] [2022-11-20 10:47:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:41,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:47:41,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:47:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:41,772 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) [2022-11-20 10:47:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:41,893 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-11-20 10:47:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:47:41,894 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 [2022-11-20 10:47:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:41,895 INFO L225 Difference]: With dead ends: 496 [2022-11-20 10:47:41,896 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 10:47:41,897 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 [2022-11-20 10:47:41,897 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 24 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-20 10:47:41,898 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] [2022-11-20 10:47:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 10:47:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-11-20 10:47:41,910 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) [2022-11-20 10:47:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-11-20 10:47:41,912 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2022-11-20 10:47:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:41,912 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-11-20 10:47:41,913 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) [2022-11-20 10:47:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-11-20 10:47:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 10:47:41,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:41,914 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] [2022-11-20 10:47:41,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:42,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:47:42,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:42,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2022-11-20 10:47:42,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047156219] [2022-11-20 10:47:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:42,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:42,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538358051] [2022-11-20 10:47:42,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:47:42,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:42,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:42,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:42,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:47:42,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:47:42,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:42,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:47:42,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:47:42,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:42,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047156219] [2022-11-20 10:47:42,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:42,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538358051] [2022-11-20 10:47:42,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538358051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:42,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:42,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:47:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117638163] [2022-11-20 10:47:42,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:42,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:47:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:47:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:47:42,303 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) [2022-11-20 10:47:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:42,602 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2022-11-20 10:47:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:42,603 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 [2022-11-20 10:47:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:42,605 INFO L225 Difference]: With dead ends: 516 [2022-11-20 10:47:42,605 INFO L226 Difference]: Without dead ends: 303 [2022-11-20 10:47:42,607 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 [2022-11-20 10:47:42,607 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:42,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 345 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:47:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-20 10:47:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2022-11-20 10:47:42,624 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) [2022-11-20 10:47:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2022-11-20 10:47:42,626 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2022-11-20 10:47:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:42,627 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2022-11-20 10:47:42,627 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) [2022-11-20 10:47:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2022-11-20 10:47:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 10:47:42,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:42,628 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] [2022-11-20 10:47:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:47:42,834 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2022-11-20 10:47:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:42,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190763058] [2022-11-20 10:47:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:42,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:42,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:42,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890580135] [2022-11-20 10:47:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:42,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:42,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:42,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:47:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:42,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:47:42,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:43,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:43,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:43,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190763058] [2022-11-20 10:47:43,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:43,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890580135] [2022-11-20 10:47:43,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890580135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:43,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:43,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-20 10:47:43,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391996615] [2022-11-20 10:47:43,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:43,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:47:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:47:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:47:43,226 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) [2022-11-20 10:47:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:43,671 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2022-11-20 10:47:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:47:43,672 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 [2022-11-20 10:47:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:43,674 INFO L225 Difference]: With dead ends: 533 [2022-11-20 10:47:43,674 INFO L226 Difference]: Without dead ends: 323 [2022-11-20 10:47:43,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:47:43,677 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 [2022-11-20 10:47:43,677 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] [2022-11-20 10:47:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-20 10:47:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-11-20 10:47:43,697 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) [2022-11-20 10:47:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-11-20 10:47:43,703 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2022-11-20 10:47:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:43,704 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-11-20 10:47:43,704 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) [2022-11-20 10:47:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-11-20 10:47:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:47:43,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:43,705 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] [2022-11-20 10:47:43,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:43,910 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2022-11-20 10:47:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252792313] [2022-11-20 10:47:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:43,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:43,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972798980] [2022-11-20 10:47:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:43,919 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:43,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:47:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:43,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:47:43,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:44,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:45,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252792313] [2022-11-20 10:47:45,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:45,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972798980] [2022-11-20 10:47:45,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972798980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:45,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:45,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 10:47:45,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410053594] [2022-11-20 10:47:45,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:45,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:47:45,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:45,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:47:45,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:47:45,163 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) [2022-11-20 10:47:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:46,805 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2022-11-20 10:47:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:47:46,806 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 [2022-11-20 10:47:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:46,808 INFO L225 Difference]: With dead ends: 606 [2022-11-20 10:47:46,808 INFO L226 Difference]: Without dead ends: 392 [2022-11-20 10:47:46,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 10:47:46,811 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 197 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:46,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 774 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 580 Invalid, 0 Unknown, 70 Unchecked, 0.7s Time] [2022-11-20 10:47:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-20 10:47:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2022-11-20 10:47:46,836 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) [2022-11-20 10:47:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2022-11-20 10:47:46,839 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2022-11-20 10:47:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:46,839 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2022-11-20 10:47:46,839 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) [2022-11-20 10:47:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2022-11-20 10:47:46,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 10:47:46,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:46,840 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] [2022-11-20 10:47:46,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 10:47:47,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:47,046 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:47,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2022-11-20 10:47:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:47,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502252428] [2022-11-20 10:47:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:47,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:47,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428885382] [2022-11-20 10:47:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:47,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:47,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:47:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:47,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:47:47,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 10:47:47,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:47:47,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:47,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502252428] [2022-11-20 10:47:47,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:47,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428885382] [2022-11-20 10:47:47,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428885382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:47,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:47,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-11-20 10:47:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758691714] [2022-11-20 10:47:47,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:47,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:47:47,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:47,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:47:47,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:47:47,576 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) [2022-11-20 10:47:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:48,053 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2022-11-20 10:47:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:47:48,053 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 [2022-11-20 10:47:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:48,056 INFO L225 Difference]: With dead ends: 706 [2022-11-20 10:47:48,056 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 10:47:48,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:47:48,058 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:48,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 459 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:47:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 10:47:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2022-11-20 10:47:48,075 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) [2022-11-20 10:47:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2022-11-20 10:47:48,078 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2022-11-20 10:47:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:48,078 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2022-11-20 10:47:48,078 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) [2022-11-20 10:47:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2022-11-20 10:47:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-20 10:47:48,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:48,086 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] [2022-11-20 10:47:48,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:48,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:48,292 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2022-11-20 10:47:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:48,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649381755] [2022-11-20 10:47:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:48,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:48,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026492394] [2022-11-20 10:47:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:48,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:48,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:48,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:47:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:48,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:47:48,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 10:47:48,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649381755] [2022-11-20 10:47:48,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026492394] [2022-11-20 10:47:48,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026492394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:48,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:48,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:47:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867879815] [2022-11-20 10:47:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:48,460 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) [2022-11-20 10:47:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:48,650 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2022-11-20 10:47:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:48,651 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 [2022-11-20 10:47:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:48,653 INFO L225 Difference]: With dead ends: 683 [2022-11-20 10:47:48,653 INFO L226 Difference]: Without dead ends: 369 [2022-11-20 10:47:48,655 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 [2022-11-20 10:47:48,655 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:48,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 341 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:47:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-20 10:47:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2022-11-20 10:47:48,671 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) [2022-11-20 10:47:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2022-11-20 10:47:48,705 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2022-11-20 10:47:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:48,705 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2022-11-20 10:47:48,705 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) [2022-11-20 10:47:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2022-11-20 10:47:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 10:47:48,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:48,706 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] [2022-11-20 10:47:48,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 10:47:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 10:47:48,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2022-11-20 10:47:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:48,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667884928] [2022-11-20 10:47:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:48,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:48,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041132304] [2022-11-20 10:47:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:48,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:48,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:48,924 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:48,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:47:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:47:48,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 10:47:49,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 10:47:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:49,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667884928] [2022-11-20 10:47:49,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:49,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041132304] [2022-11-20 10:47:49,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041132304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:49,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:49,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 10:47:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534599081] [2022-11-20 10:47:49,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:47:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:47:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:47:49,338 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) [2022-11-20 10:47:49,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:49,853 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2022-11-20 10:47:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:47:49,854 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 [2022-11-20 10:47:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:49,856 INFO L225 Difference]: With dead ends: 442 [2022-11-20 10:47:49,856 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 10:47:49,856 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 [2022-11-20 10:47:49,857 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:49,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 569 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:47:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 10:47:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2022-11-20 10:47:49,878 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) [2022-11-20 10:47:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2022-11-20 10:47:49,881 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2022-11-20 10:47:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:49,881 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2022-11-20 10:47:49,881 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) [2022-11-20 10:47:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2022-11-20 10:47:49,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:47:49,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:49,882 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] [2022-11-20 10:47:49,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 10:47:50,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2022-11-20 10:47:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394678608] [2022-11-20 10:47:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:50,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:50,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:50,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700485354] [2022-11-20 10:47:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:50,103 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:50,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:47:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:50,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:47:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 10:47:50,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394678608] [2022-11-20 10:47:50,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700485354] [2022-11-20 10:47:50,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700485354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:50,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:50,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:47:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840198852] [2022-11-20 10:47:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:47:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:47:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:47:50,328 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) [2022-11-20 10:47:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:50,552 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2022-11-20 10:47:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:47:50,553 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 [2022-11-20 10:47:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:50,555 INFO L225 Difference]: With dead ends: 425 [2022-11-20 10:47:50,555 INFO L226 Difference]: Without dead ends: 424 [2022-11-20 10:47:50,558 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 [2022-11-20 10:47:50,559 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-20 10:47:50,560 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] [2022-11-20 10:47:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-20 10:47:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-11-20 10:47:50,580 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) [2022-11-20 10:47:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2022-11-20 10:47:50,583 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2022-11-20 10:47:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:50,584 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2022-11-20 10:47:50,584 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) [2022-11-20 10:47:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2022-11-20 10:47:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 10:47:50,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:50,585 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] [2022-11-20 10:47:50,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:50,790 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2022-11-20 10:47:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:50,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489165279] [2022-11-20 10:47:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:50,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:50,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730922137] [2022-11-20 10:47:50,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:47:50,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:50,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:50,800 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:50,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:47:50,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:47:50,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:50,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:47:50,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:47:51,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 10:47:51,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489165279] [2022-11-20 10:47:51,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730922137] [2022-11-20 10:47:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730922137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:51,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:47:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248544913] [2022-11-20 10:47:51,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:47:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:47:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:47:51,319 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) [2022-11-20 10:47:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:51,981 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2022-11-20 10:47:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:47:51,982 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 [2022-11-20 10:47:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:51,984 INFO L225 Difference]: With dead ends: 478 [2022-11-20 10:47:51,984 INFO L226 Difference]: Without dead ends: 477 [2022-11-20 10:47:51,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:47:51,986 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:51,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:47:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-20 10:47:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2022-11-20 10:47:52,009 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) [2022-11-20 10:47:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2022-11-20 10:47:52,012 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2022-11-20 10:47:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:52,013 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2022-11-20 10:47:52,013 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) [2022-11-20 10:47:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2022-11-20 10:47:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:47:52,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:52,014 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] [2022-11-20 10:47:52,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:52,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:52,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2022-11-20 10:47:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:52,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283545648] [2022-11-20 10:47:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:52,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:52,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758328216] [2022-11-20 10:47:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:52,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:52,230 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:52,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 10:47:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:52,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:47:52,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 10:47:52,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:52,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283545648] [2022-11-20 10:47:52,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758328216] [2022-11-20 10:47:52,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758328216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:52,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:52,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:47:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164983897] [2022-11-20 10:47:52,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:52,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:47:52,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:52,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:47:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:47:52,492 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) [2022-11-20 10:47:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:52,885 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2022-11-20 10:47:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:47:52,886 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 [2022-11-20 10:47:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:52,889 INFO L225 Difference]: With dead ends: 875 [2022-11-20 10:47:52,889 INFO L226 Difference]: Without dead ends: 466 [2022-11-20 10:47:52,891 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 [2022-11-20 10:47:52,892 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-20 10:47:52,894 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] [2022-11-20 10:47:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-20 10:47:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-11-20 10:47:52,918 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) [2022-11-20 10:47:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2022-11-20 10:47:52,921 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2022-11-20 10:47:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:52,921 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2022-11-20 10:47:52,921 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) [2022-11-20 10:47:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2022-11-20 10:47:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:47:52,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:52,923 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] [2022-11-20 10:47:52,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 10:47:53,135 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:53,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:53,136 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2022-11-20 10:47:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:53,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407520824] [2022-11-20 10:47:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:53,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:53,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178873486] [2022-11-20 10:47:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:53,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:53,145 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:53,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 10:47:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:47:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 10:47:53,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407520824] [2022-11-20 10:47:53,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178873486] [2022-11-20 10:47:53,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178873486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:53,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:53,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-20 10:47:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466030023] [2022-11-20 10:47:53,851 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:53,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:47:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:47:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:47:53,852 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) [2022-11-20 10:47:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:54,292 INFO L93 Difference]: Finished difference Result 477 states and 629 transitions. [2022-11-20 10:47:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:47:54,293 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 [2022-11-20 10:47:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:54,295 INFO L225 Difference]: With dead ends: 477 [2022-11-20 10:47:54,295 INFO L226 Difference]: Without dead ends: 476 [2022-11-20 10:47:54,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:47:54,297 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 67 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-20 10:47:54,297 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] [2022-11-20 10:47:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-20 10:47:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 468. [2022-11-20 10:47:54,320 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) [2022-11-20 10:47:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 626 transitions. [2022-11-20 10:47:54,323 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 626 transitions. Word has length 79 [2022-11-20 10:47:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:54,324 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 626 transitions. [2022-11-20 10:47:54,324 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) [2022-11-20 10:47:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 626 transitions. [2022-11-20 10:47:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 10:47:54,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:54,325 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] [2022-11-20 10:47:54,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:54,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 10:47:54,531 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2022-11-20 10:47:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040403492] [2022-11-20 10:47:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:54,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:54,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825070867] [2022-11-20 10:47:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:54,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:54,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:54,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:54,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 10:47:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:54,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:47:54,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 10:47:54,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040403492] [2022-11-20 10:47:54,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825070867] [2022-11-20 10:47:54,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825070867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:54,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:54,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:47:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066252125] [2022-11-20 10:47:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:54,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:47:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:47:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:54,693 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) [2022-11-20 10:47:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:54,777 INFO L93 Difference]: Finished difference Result 470 states and 632 transitions. [2022-11-20 10:47:54,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:47:54,779 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 [2022-11-20 10:47:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:54,782 INFO L225 Difference]: With dead ends: 470 [2022-11-20 10:47:54,783 INFO L226 Difference]: Without dead ends: 469 [2022-11-20 10:47:54,783 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 [2022-11-20 10:47:54,784 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-11-20 10:47:54,784 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] [2022-11-20 10:47:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-20 10:47:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 467. [2022-11-20 10:47:54,809 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) [2022-11-20 10:47:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 618 transitions. [2022-11-20 10:47:54,812 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 618 transitions. Word has length 80 [2022-11-20 10:47:54,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:54,812 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 618 transitions. [2022-11-20 10:47:54,813 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) [2022-11-20 10:47:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 618 transitions. [2022-11-20 10:47:54,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 10:47:54,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:54,814 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] [2022-11-20 10:47:54,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 10:47:55,019 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 653690462, now seen corresponding path program 2 times [2022-11-20 10:47:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439037182] [2022-11-20 10:47:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:55,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:55,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331254888] [2022-11-20 10:47:55,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:47:55,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:55,030 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:55,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 10:47:55,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:47:55,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:47:55,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 10:47:55,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 10:47:55,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:55,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439037182] [2022-11-20 10:47:55,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:55,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331254888] [2022-11-20 10:47:55,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331254888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:55,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:55,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-20 10:47:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757540882] [2022-11-20 10:47:55,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:55,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:47:55,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:47:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:47:55,612 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) [2022-11-20 10:47:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:56,367 INFO L93 Difference]: Finished difference Result 918 states and 1215 transitions. [2022-11-20 10:47:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:47:56,368 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 [2022-11-20 10:47:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:56,370 INFO L225 Difference]: With dead ends: 918 [2022-11-20 10:47:56,370 INFO L226 Difference]: Without dead ends: 512 [2022-11-20 10:47:56,372 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 [2022-11-20 10:47:56,373 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 [2022-11-20 10:47:56,373 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] [2022-11-20 10:47:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-20 10:47:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 487. [2022-11-20 10:47:56,395 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) [2022-11-20 10:47:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 637 transitions. [2022-11-20 10:47:56,398 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 637 transitions. Word has length 84 [2022-11-20 10:47:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:56,399 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 637 transitions. [2022-11-20 10:47:56,399 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) [2022-11-20 10:47:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 637 transitions. [2022-11-20 10:47:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 10:47:56,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:56,400 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] [2022-11-20 10:47:56,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:56,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 10:47:56,606 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2022-11-20 10:47:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:56,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029906303] [2022-11-20 10:47:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:56,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:56,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416773544] [2022-11-20 10:47:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:56,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:56,619 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:56,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:47:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:56,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:47:56,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-20 10:47:56,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029906303] [2022-11-20 10:47:57,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416773544] [2022-11-20 10:47:57,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416773544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:57,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:57,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-11-20 10:47:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849994792] [2022-11-20 10:47:57,021 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:47:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:47:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:57,022 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) [2022-11-20 10:47:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:57,118 INFO L93 Difference]: Finished difference Result 525 states and 696 transitions. [2022-11-20 10:47:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:57,119 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 [2022-11-20 10:47:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:57,122 INFO L225 Difference]: With dead ends: 525 [2022-11-20 10:47:57,122 INFO L226 Difference]: Without dead ends: 524 [2022-11-20 10:47:57,122 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 [2022-11-20 10:47:57,123 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 [2022-11-20 10:47:57,123 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] [2022-11-20 10:47:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-20 10:47:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 499. [2022-11-20 10:47:57,147 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) [2022-11-20 10:47:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 646 transitions. [2022-11-20 10:47:57,149 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 646 transitions. Word has length 84 [2022-11-20 10:47:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:57,150 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 646 transitions. [2022-11-20 10:47:57,150 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) [2022-11-20 10:47:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 646 transitions. [2022-11-20 10:47:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 10:47:57,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:57,151 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] [2022-11-20 10:47:57,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:57,357 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2022-11-20 10:47:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:57,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603510652] [2022-11-20 10:47:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:57,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:57,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425656758] [2022-11-20 10:47:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:57,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:57,369 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:57,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 10:47:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:57,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:47:57,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-20 10:47:57,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603510652] [2022-11-20 10:47:57,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425656758] [2022-11-20 10:47:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425656758] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:57,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:47:57,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-11-20 10:47:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324193223] [2022-11-20 10:47:57,684 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:47:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:47:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:57,686 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) [2022-11-20 10:47:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:57,766 INFO L93 Difference]: Finished difference Result 524 states and 687 transitions. [2022-11-20 10:47:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:47:57,766 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 [2022-11-20 10:47:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:57,769 INFO L225 Difference]: With dead ends: 524 [2022-11-20 10:47:57,769 INFO L226 Difference]: Without dead ends: 523 [2022-11-20 10:47:57,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:57,770 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 [2022-11-20 10:47:57,771 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] [2022-11-20 10:47:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-20 10:47:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 484. [2022-11-20 10:47:57,792 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) [2022-11-20 10:47:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 628 transitions. [2022-11-20 10:47:57,795 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 628 transitions. Word has length 85 [2022-11-20 10:47:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:57,795 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 628 transitions. [2022-11-20 10:47:57,795 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) [2022-11-20 10:47:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 628 transitions. [2022-11-20 10:47:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 10:47:57,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:57,797 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] [2022-11-20 10:47:57,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:58,002 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2022-11-20 10:47:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711445500] [2022-11-20 10:47:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:58,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:58,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237767223] [2022-11-20 10:47:58,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:47:58,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:58,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:58,013 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:58,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 10:47:58,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:47:58,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:58,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:47:58,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 10:47:58,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:47:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711445500] [2022-11-20 10:47:58,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237767223] [2022-11-20 10:47:58,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237767223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:58,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:58,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:47:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435947505] [2022-11-20 10:47:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:47:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:47:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:47:58,478 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) [2022-11-20 10:47:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:58,626 INFO L93 Difference]: Finished difference Result 486 states and 633 transitions. [2022-11-20 10:47:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:47:58,626 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 [2022-11-20 10:47:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:58,629 INFO L225 Difference]: With dead ends: 486 [2022-11-20 10:47:58,629 INFO L226 Difference]: Without dead ends: 483 [2022-11-20 10:47:58,630 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 [2022-11-20 10:47:58,630 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 [2022-11-20 10:47:58,631 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] [2022-11-20 10:47:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-20 10:47:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 412. [2022-11-20 10:47:58,654 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) [2022-11-20 10:47:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2022-11-20 10:47:58,656 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 86 [2022-11-20 10:47:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:58,657 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2022-11-20 10:47:58,657 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) [2022-11-20 10:47:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2022-11-20 10:47:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-20 10:47:58,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:58,659 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] [2022-11-20 10:47:58,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:58,864 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:47:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2022-11-20 10:47:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:58,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564801628] [2022-11-20 10:47:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:58,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:47:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811926849] [2022-11-20 10:47:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:58,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:58,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:58,876 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:58,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 10:47:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:58,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:47:58,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-20 10:47:59,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-20 10:47:59,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564801628] [2022-11-20 10:47:59,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:47:59,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811926849] [2022-11-20 10:47:59,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811926849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:59,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:47:59,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:47:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609523495] [2022-11-20 10:47:59,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:47:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:47:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:47:59,375 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) [2022-11-20 10:48:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:00,047 INFO L93 Difference]: Finished difference Result 563 states and 697 transitions. [2022-11-20 10:48:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:48:00,047 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 [2022-11-20 10:48:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:00,051 INFO L225 Difference]: With dead ends: 563 [2022-11-20 10:48:00,051 INFO L226 Difference]: Without dead ends: 560 [2022-11-20 10:48:00,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:48:00,052 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 [2022-11-20 10:48:00,052 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] [2022-11-20 10:48:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-20 10:48:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 532. [2022-11-20 10:48:00,082 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) [2022-11-20 10:48:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 652 transitions. [2022-11-20 10:48:00,084 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 652 transitions. Word has length 106 [2022-11-20 10:48:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:00,085 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 652 transitions. [2022-11-20 10:48:00,085 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) [2022-11-20 10:48:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 652 transitions. [2022-11-20 10:48:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 10:48:00,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:00,087 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] [2022-11-20 10:48:00,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:00,292 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2022-11-20 10:48:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804804050] [2022-11-20 10:48:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:00,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:00,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170417858] [2022-11-20 10:48:00,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:00,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:00,303 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 10:48:00,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:48:00,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:00,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:48:00,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 10:48:00,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804804050] [2022-11-20 10:48:00,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:00,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170417858] [2022-11-20 10:48:00,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170417858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:00,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:00,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802847240] [2022-11-20 10:48:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:00,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:00,468 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) [2022-11-20 10:48:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:00,597 INFO L93 Difference]: Finished difference Result 840 states and 1034 transitions. [2022-11-20 10:48:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:48:00,598 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 [2022-11-20 10:48:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:00,600 INFO L225 Difference]: With dead ends: 840 [2022-11-20 10:48:00,600 INFO L226 Difference]: Without dead ends: 465 [2022-11-20 10:48:00,604 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 [2022-11-20 10:48:00,605 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 [2022-11-20 10:48:00,605 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] [2022-11-20 10:48:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-11-20 10:48:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 464. [2022-11-20 10:48:00,628 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) [2022-11-20 10:48:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 555 transitions. [2022-11-20 10:48:00,630 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 555 transitions. Word has length 112 [2022-11-20 10:48:00,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:00,630 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 555 transitions. [2022-11-20 10:48:00,630 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) [2022-11-20 10:48:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 555 transitions. [2022-11-20 10:48:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 10:48:00,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:00,633 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] [2022-11-20 10:48:00,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:00,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:00,839 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2022-11-20 10:48:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847966374] [2022-11-20 10:48:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:00,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:00,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:00,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255997396] [2022-11-20 10:48:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:00,849 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:00,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 10:48:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:00,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:48:00,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-20 10:48:01,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-20 10:48:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847966374] [2022-11-20 10:48:01,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:01,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255997396] [2022-11-20 10:48:01,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255997396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:01,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:01,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 10:48:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206277727] [2022-11-20 10:48:01,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:48:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:48:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:48:01,974 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) [2022-11-20 10:48:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:03,634 INFO L93 Difference]: Finished difference Result 838 states and 1031 transitions. [2022-11-20 10:48:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:48:03,635 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 [2022-11-20 10:48:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:03,637 INFO L225 Difference]: With dead ends: 838 [2022-11-20 10:48:03,637 INFO L226 Difference]: Without dead ends: 509 [2022-11-20 10:48:03,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 10:48:03,639 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 [2022-11-20 10:48:03,639 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] [2022-11-20 10:48:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-20 10:48:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 486. [2022-11-20 10:48:03,665 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) [2022-11-20 10:48:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 577 transitions. [2022-11-20 10:48:03,667 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 577 transitions. Word has length 114 [2022-11-20 10:48:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:03,668 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 577 transitions. [2022-11-20 10:48:03,668 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) [2022-11-20 10:48:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 577 transitions. [2022-11-20 10:48:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 10:48:03,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:03,670 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] [2022-11-20 10:48:03,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-20 10:48:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 10:48:03,875 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2022-11-20 10:48:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949400476] [2022-11-20 10:48:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:03,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:03,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126784689] [2022-11-20 10:48:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:03,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:03,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:03,894 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:03,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 10:48:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:03,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:48:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 10:48:04,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-20 10:48:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:14,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949400476] [2022-11-20 10:48:14,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:14,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126784689] [2022-11-20 10:48:14,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126784689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:14,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:14,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-20 10:48:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774227608] [2022-11-20 10:48:14,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:48:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:48:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=889, Unknown=4, NotChecked=0, Total=992 [2022-11-20 10:48:14,249 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) [2022-11-20 10:48:20,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 10:48:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:22,165 INFO L93 Difference]: Finished difference Result 1303 states and 1685 transitions. [2022-11-20 10:48:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:48:22,166 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 [2022-11-20 10:48:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:22,171 INFO L225 Difference]: With dead ends: 1303 [2022-11-20 10:48:22,171 INFO L226 Difference]: Without dead ends: 981 [2022-11-20 10:48:22,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=360, Invalid=2828, Unknown=4, NotChecked=0, Total=3192 [2022-11-20 10:48:22,174 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 [2022-11-20 10:48:22,175 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] [2022-11-20 10:48:22,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-20 10:48:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 761. [2022-11-20 10:48:22,250 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) [2022-11-20 10:48:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 960 transitions. [2022-11-20 10:48:22,254 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 960 transitions. Word has length 119 [2022-11-20 10:48:22,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:22,255 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 960 transitions. [2022-11-20 10:48:22,255 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) [2022-11-20 10:48:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 960 transitions. [2022-11-20 10:48:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 10:48:22,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:22,258 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] [2022-11-20 10:48:22,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:22,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 10:48:22,464 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1993467777, now seen corresponding path program 2 times [2022-11-20 10:48:22,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:22,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374086714] [2022-11-20 10:48:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:22,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:22,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:22,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377612446] [2022-11-20 10:48:22,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:22,480 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:22,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 10:48:22,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:48:22,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:22,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:48:22,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 239 proven. 10 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:48:22,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 93 proven. 46 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-20 10:48:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374086714] [2022-11-20 10:48:23,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377612446] [2022-11-20 10:48:23,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377612446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:23,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:23,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-11-20 10:48:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058267226] [2022-11-20 10:48:23,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:23,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:48:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:48:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:48:23,156 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) [2022-11-20 10:48:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:23,789 INFO L93 Difference]: Finished difference Result 1469 states and 1883 transitions. [2022-11-20 10:48:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:48:23,790 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 [2022-11-20 10:48:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:23,795 INFO L225 Difference]: With dead ends: 1469 [2022-11-20 10:48:23,795 INFO L226 Difference]: Without dead ends: 801 [2022-11-20 10:48:23,798 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 [2022-11-20 10:48:23,799 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 82 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-11-20 10:48:23,799 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] [2022-11-20 10:48:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-20 10:48:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 771. [2022-11-20 10:48:23,884 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) [2022-11-20 10:48:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 964 transitions. [2022-11-20 10:48:23,888 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 964 transitions. Word has length 139 [2022-11-20 10:48:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:23,888 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 964 transitions. [2022-11-20 10:48:23,889 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) [2022-11-20 10:48:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 964 transitions. [2022-11-20 10:48:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 10:48:23,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:23,891 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] [2022-11-20 10:48:23,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:24,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 10:48:24,098 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2022-11-20 10:48:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:24,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364188267] [2022-11-20 10:48:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:24,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:24,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692064654] [2022-11-20 10:48:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:24,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:24,125 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:24,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 10:48:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:24,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:48:24,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-20 10:48:24,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-20 10:48:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364188267] [2022-11-20 10:48:24,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692064654] [2022-11-20 10:48:24,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692064654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:24,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:24,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 10:48:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88327147] [2022-11-20 10:48:24,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:24,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:48:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:48:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:48:24,668 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) [2022-11-20 10:48:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:25,130 INFO L93 Difference]: Finished difference Result 777 states and 965 transitions. [2022-11-20 10:48:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:48:25,131 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 [2022-11-20 10:48:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:25,135 INFO L225 Difference]: With dead ends: 777 [2022-11-20 10:48:25,135 INFO L226 Difference]: Without dead ends: 776 [2022-11-20 10:48:25,136 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 [2022-11-20 10:48:25,137 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 [2022-11-20 10:48:25,137 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] [2022-11-20 10:48:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-20 10:48:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 771. [2022-11-20 10:48:25,198 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) [2022-11-20 10:48:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 962 transitions. [2022-11-20 10:48:25,202 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 962 transitions. Word has length 125 [2022-11-20 10:48:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:25,204 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 962 transitions. [2022-11-20 10:48:25,204 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) [2022-11-20 10:48:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 962 transitions. [2022-11-20 10:48:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 10:48:25,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:25,207 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] [2022-11-20 10:48:25,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:25,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 10:48:25,413 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1621099001, now seen corresponding path program 2 times [2022-11-20 10:48:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:25,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648737152] [2022-11-20 10:48:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:25,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:25,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698899476] [2022-11-20 10:48:25,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:25,427 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:25,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-20 10:48:25,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:48:25,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:25,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:48:25,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 144 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 10:48:25,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 59 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 10:48:25,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648737152] [2022-11-20 10:48:25,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698899476] [2022-11-20 10:48:25,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698899476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:25,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:25,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-11-20 10:48:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858163837] [2022-11-20 10:48:25,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:25,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:48:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:48:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:48:25,919 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) [2022-11-20 10:48:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:26,338 INFO L93 Difference]: Finished difference Result 1340 states and 1719 transitions. [2022-11-20 10:48:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:48:26,339 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 [2022-11-20 10:48:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:26,344 INFO L225 Difference]: With dead ends: 1340 [2022-11-20 10:48:26,344 INFO L226 Difference]: Without dead ends: 776 [2022-11-20 10:48:26,347 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 [2022-11-20 10:48:26,353 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 [2022-11-20 10:48:26,354 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] [2022-11-20 10:48:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-20 10:48:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 761. [2022-11-20 10:48:26,416 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) [2022-11-20 10:48:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 948 transitions. [2022-11-20 10:48:26,419 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 948 transitions. Word has length 129 [2022-11-20 10:48:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:26,420 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 948 transitions. [2022-11-20 10:48:26,420 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) [2022-11-20 10:48:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 948 transitions. [2022-11-20 10:48:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 10:48:26,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:26,423 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] [2022-11-20 10:48:26,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 10:48:26,628 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1955065017, now seen corresponding path program 3 times [2022-11-20 10:48:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:26,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644704782] [2022-11-20 10:48:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:26,635 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857162172] [2022-11-20 10:48:26,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:48:26,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:26,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:26,637 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:26,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-20 10:48:26,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:48:26,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:26,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:48:26,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-20 10:48:26,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:48:26,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:26,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644704782] [2022-11-20 10:48:26,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:26,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857162172] [2022-11-20 10:48:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857162172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:26,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:26,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:48:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079448689] [2022-11-20 10:48:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:26,795 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) [2022-11-20 10:48:27,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:27,044 INFO L93 Difference]: Finished difference Result 801 states and 1014 transitions. [2022-11-20 10:48:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:27,045 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 [2022-11-20 10:48:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:27,049 INFO L225 Difference]: With dead ends: 801 [2022-11-20 10:48:27,049 INFO L226 Difference]: Without dead ends: 800 [2022-11-20 10:48:27,050 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 [2022-11-20 10:48:27,050 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:27,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 202 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:48:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-20 10:48:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 771. [2022-11-20 10:48:27,128 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) [2022-11-20 10:48:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 960 transitions. [2022-11-20 10:48:27,131 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 960 transitions. Word has length 133 [2022-11-20 10:48:27,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:27,132 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 960 transitions. [2022-11-20 10:48:27,132 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) [2022-11-20 10:48:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 960 transitions. [2022-11-20 10:48:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 10:48:27,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:27,134 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] [2022-11-20 10:48:27,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:27,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 10:48:27,340 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 4 times [2022-11-20 10:48:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:27,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793262236] [2022-11-20 10:48:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:27,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895717790] [2022-11-20 10:48:27,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:48:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:27,353 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:27,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-20 10:48:27,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:48:27,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:27,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:48:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 151 proven. 43 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2022-11-20 10:48:27,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-20 10:48:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:28,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793262236] [2022-11-20 10:48:28,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:28,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895717790] [2022-11-20 10:48:28,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895717790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:28,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:28,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-11-20 10:48:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94689767] [2022-11-20 10:48:28,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:48:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:48:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:48:28,309 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) [2022-11-20 10:48:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:29,190 INFO L93 Difference]: Finished difference Result 1781 states and 2341 transitions. [2022-11-20 10:48:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:48:29,191 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 [2022-11-20 10:48:29,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:29,197 INFO L225 Difference]: With dead ends: 1781 [2022-11-20 10:48:29,197 INFO L226 Difference]: Without dead ends: 1112 [2022-11-20 10:48:29,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:48:29,201 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 181 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:29,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 310 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:48:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-20 10:48:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 874. [2022-11-20 10:48:29,296 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) [2022-11-20 10:48:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1109 transitions. [2022-11-20 10:48:29,300 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1109 transitions. Word has length 143 [2022-11-20 10:48:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:29,301 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1109 transitions. [2022-11-20 10:48:29,301 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) [2022-11-20 10:48:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1109 transitions. [2022-11-20 10:48:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 10:48:29,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:29,302 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] [2022-11-20 10:48:29,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:29,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:29,508 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2022-11-20 10:48:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:29,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878434011] [2022-11-20 10:48:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:29,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172086934] [2022-11-20 10:48:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:29,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:29,520 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:29,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-20 10:48:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:29,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:48:29,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-20 10:48:29,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-11-20 10:48:30,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878434011] [2022-11-20 10:48:30,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172086934] [2022-11-20 10:48:30,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172086934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:30,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:30,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-11-20 10:48:30,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057804162] [2022-11-20 10:48:30,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:30,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:48:30,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:48:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:48:30,434 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) [2022-11-20 10:48:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:30,989 INFO L93 Difference]: Finished difference Result 1783 states and 2340 transitions. [2022-11-20 10:48:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:48:30,990 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 [2022-11-20 10:48:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:30,995 INFO L225 Difference]: With dead ends: 1783 [2022-11-20 10:48:30,995 INFO L226 Difference]: Without dead ends: 922 [2022-11-20 10:48:30,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 270 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:48:30,999 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 97 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:30,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 264 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:48:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-11-20 10:48:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 820. [2022-11-20 10:48:31,079 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) [2022-11-20 10:48:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1033 transitions. [2022-11-20 10:48:31,083 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1033 transitions. Word has length 146 [2022-11-20 10:48:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1033 transitions. [2022-11-20 10:48:31,084 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) [2022-11-20 10:48:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1033 transitions. [2022-11-20 10:48:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 10:48:31,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:31,085 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] [2022-11-20 10:48:31,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-20 10:48:31,291 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1077439367, now seen corresponding path program 5 times [2022-11-20 10:48:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066577066] [2022-11-20 10:48:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:31,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:31,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287856037] [2022-11-20 10:48:31,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:48:31,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:31,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:31,303 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:31,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-20 10:48:31,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 10:48:31,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:31,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 10:48:31,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 150 proven. 33 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-20 10:48:31,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 144 proven. 22 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-20 10:48:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:39,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066577066] [2022-11-20 10:48:39,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287856037] [2022-11-20 10:48:39,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287856037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:39,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:39,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 34 [2022-11-20 10:48:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794861406] [2022-11-20 10:48:39,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 10:48:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 10:48:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1069, Unknown=3, NotChecked=0, Total=1190 [2022-11-20 10:48:39,765 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) [2022-11-20 10:48:47,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 10:48:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:48,728 INFO L93 Difference]: Finished difference Result 1127 states and 1463 transitions. [2022-11-20 10:48:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-20 10:48:48,728 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 [2022-11-20 10:48:48,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:48,733 INFO L225 Difference]: With dead ends: 1127 [2022-11-20 10:48:48,733 INFO L226 Difference]: Without dead ends: 1126 [2022-11-20 10:48:48,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=472, Invalid=3815, Unknown=3, NotChecked=0, Total=4290 [2022-11-20 10:48:48,736 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 281 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:48,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 680 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1746 Invalid, 0 Unknown, 4 Unchecked, 6.2s Time] [2022-11-20 10:48:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-20 10:48:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 985. [2022-11-20 10:48:48,848 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) [2022-11-20 10:48:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1285 transitions. [2022-11-20 10:48:48,852 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1285 transitions. Word has length 153 [2022-11-20 10:48:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:48,855 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1285 transitions. [2022-11-20 10:48:48,855 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) [2022-11-20 10:48:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1285 transitions. [2022-11-20 10:48:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 10:48:48,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:48,858 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] [2022-11-20 10:48:48,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:49,064 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2022-11-20 10:48:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:49,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506415891] [2022-11-20 10:48:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:49,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:49,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:49,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115992483] [2022-11-20 10:48:49,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:49,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:49,071 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:49,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-20 10:48:49,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:48:49,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:49,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:48:49,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-20 10:48:49,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-20 10:48:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506415891] [2022-11-20 10:48:49,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115992483] [2022-11-20 10:48:49,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115992483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:49,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:49,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 10:48:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215857681] [2022-11-20 10:48:49,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:49,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:48:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:48:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:48:49,520 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) [2022-11-20 10:48:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:49,856 INFO L93 Difference]: Finished difference Result 1122 states and 1457 transitions. [2022-11-20 10:48:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:48:49,857 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 [2022-11-20 10:48:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:49,861 INFO L225 Difference]: With dead ends: 1122 [2022-11-20 10:48:49,862 INFO L226 Difference]: Without dead ends: 1121 [2022-11-20 10:48:49,862 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 [2022-11-20 10:48:49,863 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 295 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:48:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2022-11-20 10:48:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1059. [2022-11-20 10:48:50,002 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) [2022-11-20 10:48:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1368 transitions. [2022-11-20 10:48:50,007 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1368 transitions. Word has length 156 [2022-11-20 10:48:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:50,008 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1368 transitions. [2022-11-20 10:48:50,008 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) [2022-11-20 10:48:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1368 transitions. [2022-11-20 10:48:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 10:48:50,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:50,010 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] [2022-11-20 10:48:50,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:50,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-20 10:48:50,216 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 495551865, now seen corresponding path program 6 times [2022-11-20 10:48:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:50,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180819997] [2022-11-20 10:48:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:50,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:50,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281539710] [2022-11-20 10:48:50,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:48:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:50,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:50,229 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:50,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-20 10:48:50,322 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-20 10:48:50,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:48:50,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 194 proven. 15 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-20 10:48:50,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:57,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180819997] [2022-11-20 10:48:57,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281539710] [2022-11-20 10:48:57,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281539710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:57,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:48:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-20 10:48:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657151097] [2022-11-20 10:48:57,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:48:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:48:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:48:57,020 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) [2022-11-20 10:48:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:57,833 INFO L93 Difference]: Finished difference Result 1203 states and 1606 transitions. [2022-11-20 10:48:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:48:57,833 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 [2022-11-20 10:48:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:57,838 INFO L225 Difference]: With dead ends: 1203 [2022-11-20 10:48:57,839 INFO L226 Difference]: Without dead ends: 1202 [2022-11-20 10:48:57,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:48:57,840 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-20 10:48:57,840 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] [2022-11-20 10:48:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-11-20 10:48:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1107. [2022-11-20 10:48:57,965 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) [2022-11-20 10:48:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1433 transitions. [2022-11-20 10:48:57,969 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1433 transitions. Word has length 173 [2022-11-20 10:48:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:57,970 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1433 transitions. [2022-11-20 10:48:57,970 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) [2022-11-20 10:48:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1433 transitions. [2022-11-20 10:48:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 10:48:57,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:57,972 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] [2022-11-20 10:48:57,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:58,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-20 10:48:58,177 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2022-11-20 10:48:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:58,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443092639] [2022-11-20 10:48:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:58,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:58,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:58,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708945396] [2022-11-20 10:48:58,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:48:58,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:58,190 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:58,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-20 10:48:58,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:48:58,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:58,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:48:58,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-20 10:48:58,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-20 10:48:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443092639] [2022-11-20 10:48:58,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:48:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708945396] [2022-11-20 10:48:58,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708945396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:58,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:48:58,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 10:48:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686608354] [2022-11-20 10:48:58,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:58,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:48:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:48:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:48:58,621 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) [2022-11-20 10:48:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:59,359 INFO L93 Difference]: Finished difference Result 1215 states and 1578 transitions. [2022-11-20 10:48:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:48:59,363 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 [2022-11-20 10:48:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:59,369 INFO L225 Difference]: With dead ends: 1215 [2022-11-20 10:48:59,369 INFO L226 Difference]: Without dead ends: 1214 [2022-11-20 10:48:59,370 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 [2022-11-20 10:48:59,370 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:59,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 597 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:48:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-11-20 10:48:59,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1201. [2022-11-20 10:48:59,502 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) [2022-11-20 10:48:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1560 transitions. [2022-11-20 10:48:59,509 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1560 transitions. Word has length 166 [2022-11-20 10:48:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1560 transitions. [2022-11-20 10:48:59,509 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) [2022-11-20 10:48:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1560 transitions. [2022-11-20 10:48:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 10:48:59,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:59,511 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] [2022-11-20 10:48:59,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:59,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:59,717 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:48:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1038609863, now seen corresponding path program 7 times [2022-11-20 10:48:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:59,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011530615] [2022-11-20 10:48:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:59,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:59,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:48:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002278304] [2022-11-20 10:48:59,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:48:59,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:59,729 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:59,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-20 10:48:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:48:59,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 205 proven. 40 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-20 10:49:00,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 205 proven. 41 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-20 10:49:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:00,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011530615] [2022-11-20 10:49:00,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002278304] [2022-11-20 10:49:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002278304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:00,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2022-11-20 10:49:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629851918] [2022-11-20 10:49:00,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:49:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:49:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:49:00,808 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) [2022-11-20 10:49:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:02,261 INFO L93 Difference]: Finished difference Result 2393 states and 3131 transitions. [2022-11-20 10:49:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:49:02,261 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 [2022-11-20 10:49:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:02,286 INFO L225 Difference]: With dead ends: 2393 [2022-11-20 10:49:02,286 INFO L226 Difference]: Without dead ends: 1302 [2022-11-20 10:49:02,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 319 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:49:02,292 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 157 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:02,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 569 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:49:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-11-20 10:49:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1213. [2022-11-20 10:49:02,424 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) [2022-11-20 10:49:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1536 transitions. [2022-11-20 10:49:02,429 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1536 transitions. Word has length 173 [2022-11-20 10:49:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:02,430 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1536 transitions. [2022-11-20 10:49:02,430 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) [2022-11-20 10:49:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1536 transitions. [2022-11-20 10:49:02,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 10:49:02,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:02,432 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] [2022-11-20 10:49:02,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:02,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-20 10:49:02,638 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2022-11-20 10:49:02,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:02,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916683089] [2022-11-20 10:49:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:02,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:02,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074157124] [2022-11-20 10:49:02,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:02,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:02,650 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:02,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-20 10:49:02,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:49:02,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:49:02,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-20 10:49:02,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:02,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:02,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916683089] [2022-11-20 10:49:02,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:02,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074157124] [2022-11-20 10:49:02,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074157124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:02,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:02,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 10:49:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098053415] [2022-11-20 10:49:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:02,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:49:02,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:49:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:49:02,992 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) [2022-11-20 10:49:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:03,442 INFO L93 Difference]: Finished difference Result 2279 states and 2957 transitions. [2022-11-20 10:49:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:49:03,443 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 [2022-11-20 10:49:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:03,448 INFO L225 Difference]: With dead ends: 2279 [2022-11-20 10:49:03,449 INFO L226 Difference]: Without dead ends: 1342 [2022-11-20 10:49:03,453 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 [2022-11-20 10:49:03,455 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 55 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-20 10:49:03,455 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] [2022-11-20 10:49:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-20 10:49:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1215. [2022-11-20 10:49:03,561 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) [2022-11-20 10:49:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1550 transitions. [2022-11-20 10:49:03,566 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1550 transitions. Word has length 169 [2022-11-20 10:49:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:03,567 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1550 transitions. [2022-11-20 10:49:03,567 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) [2022-11-20 10:49:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1550 transitions. [2022-11-20 10:49:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 10:49:03,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:03,569 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] [2022-11-20 10:49:03,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:03,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:03,774 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2022-11-20 10:49:03,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:03,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131578955] [2022-11-20 10:49:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:03,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:03,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:03,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661805041] [2022-11-20 10:49:03,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:49:03,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:03,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:03,800 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:03,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-20 10:49:03,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:49:03,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:03,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:49:03,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 10:49:04,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 10:49:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131578955] [2022-11-20 10:49:04,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:04,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661805041] [2022-11-20 10:49:04,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661805041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:04,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:04,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 10:49:04,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252137027] [2022-11-20 10:49:04,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:04,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:49:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:49:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:49:04,419 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) [2022-11-20 10:49:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:04,966 INFO L93 Difference]: Finished difference Result 1217 states and 1550 transitions. [2022-11-20 10:49:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:49:04,966 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 [2022-11-20 10:49:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:04,970 INFO L225 Difference]: With dead ends: 1217 [2022-11-20 10:49:04,970 INFO L226 Difference]: Without dead ends: 1216 [2022-11-20 10:49:04,970 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 [2022-11-20 10:49:04,971 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 [2022-11-20 10:49:04,971 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] [2022-11-20 10:49:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-11-20 10:49:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1215. [2022-11-20 10:49:05,086 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) [2022-11-20 10:49:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1542 transitions. [2022-11-20 10:49:05,092 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1542 transitions. Word has length 179 [2022-11-20 10:49:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:05,092 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1542 transitions. [2022-11-20 10:49:05,092 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) [2022-11-20 10:49:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1542 transitions. [2022-11-20 10:49:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 10:49:05,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:05,094 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] [2022-11-20 10:49:05,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:05,300 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2022-11-20 10:49:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:05,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109345010] [2022-11-20 10:49:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:05,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:05,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243475985] [2022-11-20 10:49:05,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:49:05,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:05,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:05,332 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:05,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-20 10:49:05,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:49:05,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:05,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:49:05,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-11-20 10:49:05,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-20 10:49:06,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109345010] [2022-11-20 10:49:06,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:06,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243475985] [2022-11-20 10:49:06,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243475985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:06,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:06,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-11-20 10:49:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967843906] [2022-11-20 10:49:06,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:49:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:49:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:49:06,370 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) [2022-11-20 10:49:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:07,410 INFO L93 Difference]: Finished difference Result 2473 states and 3283 transitions. [2022-11-20 10:49:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:49:07,411 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 [2022-11-20 10:49:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:07,419 INFO L225 Difference]: With dead ends: 2473 [2022-11-20 10:49:07,419 INFO L226 Difference]: Without dead ends: 1585 [2022-11-20 10:49:07,422 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 [2022-11-20 10:49:07,423 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 [2022-11-20 10:49:07,423 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] [2022-11-20 10:49:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-20 10:49:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1513. [2022-11-20 10:49:07,590 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) [2022-11-20 10:49:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1975 transitions. [2022-11-20 10:49:07,597 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1975 transitions. Word has length 176 [2022-11-20 10:49:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:07,597 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 1975 transitions. [2022-11-20 10:49:07,597 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) [2022-11-20 10:49:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1975 transitions. [2022-11-20 10:49:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-20 10:49:07,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:07,600 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] [2022-11-20 10:49:07,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-20 10:49:07,805 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2022-11-20 10:49:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:07,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583067130] [2022-11-20 10:49:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:07,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:07,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660664969] [2022-11-20 10:49:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:07,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:07,817 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:07,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-20 10:49:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:49:07,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-11-20 10:49:07,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:07,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:07,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583067130] [2022-11-20 10:49:07,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:07,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660664969] [2022-11-20 10:49:07,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660664969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:07,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:07,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:07,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169962007] [2022-11-20 10:49:07,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:07,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:07,985 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) [2022-11-20 10:49:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:08,134 INFO L93 Difference]: Finished difference Result 1674 states and 2181 transitions. [2022-11-20 10:49:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:08,135 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 [2022-11-20 10:49:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:08,142 INFO L225 Difference]: With dead ends: 1674 [2022-11-20 10:49:08,143 INFO L226 Difference]: Without dead ends: 1671 [2022-11-20 10:49:08,144 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 [2022-11-20 10:49:08,144 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 [2022-11-20 10:49:08,145 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] [2022-11-20 10:49:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-11-20 10:49:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1517. [2022-11-20 10:49:08,336 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) [2022-11-20 10:49:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2000 transitions. [2022-11-20 10:49:08,342 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2000 transitions. Word has length 197 [2022-11-20 10:49:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:08,343 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2000 transitions. [2022-11-20 10:49:08,343 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) [2022-11-20 10:49:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2000 transitions. [2022-11-20 10:49:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-20 10:49:08,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:08,346 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] [2022-11-20 10:49:08,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:08,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-11-20 10:49:08,554 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1918041, now seen corresponding path program 8 times [2022-11-20 10:49:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:08,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735235094] [2022-11-20 10:49:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:08,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:08,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:08,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015918620] [2022-11-20 10:49:08,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:08,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:08,569 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:08,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-20 10:49:08,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:49:08,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:08,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:49:08,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-11-20 10:49:09,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 300 proven. 96 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2022-11-20 10:49:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735235094] [2022-11-20 10:49:09,864 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015918620] [2022-11-20 10:49:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015918620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:09,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:09,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2022-11-20 10:49:09,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120368034] [2022-11-20 10:49:09,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:09,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:49:09,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:49:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:49:09,866 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) [2022-11-20 10:49:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:10,873 INFO L93 Difference]: Finished difference Result 3099 states and 4124 transitions. [2022-11-20 10:49:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:49:10,874 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 [2022-11-20 10:49:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:10,882 INFO L225 Difference]: With dead ends: 3099 [2022-11-20 10:49:10,882 INFO L226 Difference]: Without dead ends: 1614 [2022-11-20 10:49:10,887 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 [2022-11-20 10:49:10,888 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:10,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 282 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:49:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-20 10:49:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1515. [2022-11-20 10:49:11,078 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) [2022-11-20 10:49:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1944 transitions. [2022-11-20 10:49:11,084 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1944 transitions. Word has length 213 [2022-11-20 10:49:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:11,084 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1944 transitions. [2022-11-20 10:49:11,085 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) [2022-11-20 10:49:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1944 transitions. [2022-11-20 10:49:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-20 10:49:11,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:11,088 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] [2022-11-20 10:49:11,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:11,294 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2022-11-20 10:49:11,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:11,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698454875] [2022-11-20 10:49:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:11,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:11,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556571687] [2022-11-20 10:49:11,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:11,318 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:11,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-20 10:49:11,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:49:11,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:49:11,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-20 10:49:11,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-20 10:49:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698454875] [2022-11-20 10:49:12,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556571687] [2022-11-20 10:49:12,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556571687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:12,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:12,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-11-20 10:49:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718444012] [2022-11-20 10:49:12,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:12,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:49:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:49:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:49:12,214 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) [2022-11-20 10:49:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:13,165 INFO L93 Difference]: Finished difference Result 2730 states and 3542 transitions. [2022-11-20 10:49:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:49:13,166 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 [2022-11-20 10:49:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:13,175 INFO L225 Difference]: With dead ends: 2730 [2022-11-20 10:49:13,175 INFO L226 Difference]: Without dead ends: 1524 [2022-11-20 10:49:13,180 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 [2022-11-20 10:49:13,180 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 [2022-11-20 10:49:13,181 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] [2022-11-20 10:49:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-11-20 10:49:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1511. [2022-11-20 10:49:13,376 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) [2022-11-20 10:49:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1928 transitions. [2022-11-20 10:49:13,382 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1928 transitions. Word has length 207 [2022-11-20 10:49:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:13,383 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1928 transitions. [2022-11-20 10:49:13,383 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) [2022-11-20 10:49:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1928 transitions. [2022-11-20 10:49:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-20 10:49:13,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:13,386 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] [2022-11-20 10:49:13,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:13,591 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 220750957, now seen corresponding path program 3 times [2022-11-20 10:49:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884698045] [2022-11-20 10:49:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:13,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049152207] [2022-11-20 10:49:13,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:49:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:13,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:13,603 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:13,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-20 10:49:13,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 10:49:13,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:13,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 10:49:13,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 293 proven. 40 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-20 10:49:15,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884698045] [2022-11-20 10:49:18,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049152207] [2022-11-20 10:49:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049152207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:18,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-20 10:49:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829878286] [2022-11-20 10:49:18,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:18,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:49:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:49:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:49:18,255 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) [2022-11-20 10:49:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:21,128 INFO L93 Difference]: Finished difference Result 1684 states and 2254 transitions. [2022-11-20 10:49:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:49:21,129 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 [2022-11-20 10:49:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:21,139 INFO L225 Difference]: With dead ends: 1684 [2022-11-20 10:49:21,140 INFO L226 Difference]: Without dead ends: 1683 [2022-11-20 10:49:21,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:49:21,142 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 [2022-11-20 10:49:21,142 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] [2022-11-20 10:49:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-20 10:49:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1541. [2022-11-20 10:49:21,346 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) [2022-11-20 10:49:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1969 transitions. [2022-11-20 10:49:21,351 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1969 transitions. Word has length 214 [2022-11-20 10:49:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:21,352 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 1969 transitions. [2022-11-20 10:49:21,352 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) [2022-11-20 10:49:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1969 transitions. [2022-11-20 10:49:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-20 10:49:21,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:21,353 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] [2022-11-20 10:49:21,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-11-20 10:49:21,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:21,554 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash -639257203, now seen corresponding path program 4 times [2022-11-20 10:49:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:21,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900200184] [2022-11-20 10:49:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:21,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:21,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358135794] [2022-11-20 10:49:21,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:49:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:21,567 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:21,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-20 10:49:21,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:49:21,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:21,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:49:21,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 141 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-11-20 10:49:21,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 142 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-11-20 10:49:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:22,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900200184] [2022-11-20 10:49:22,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:22,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358135794] [2022-11-20 10:49:22,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358135794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:22,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:22,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2022-11-20 10:49:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995813348] [2022-11-20 10:49:22,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:22,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:49:22,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:49:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:49:22,742 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) [2022-11-20 10:49:24,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:24,049 INFO L93 Difference]: Finished difference Result 3466 states and 4604 transitions. [2022-11-20 10:49:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:49:24,050 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 [2022-11-20 10:49:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:24,057 INFO L225 Difference]: With dead ends: 3466 [2022-11-20 10:49:24,058 INFO L226 Difference]: Without dead ends: 2235 [2022-11-20 10:49:24,063 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 [2022-11-20 10:49:24,063 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 224 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:24,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 311 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:49:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-11-20 10:49:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1920. [2022-11-20 10:49:24,333 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) [2022-11-20 10:49:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2514 transitions. [2022-11-20 10:49:24,341 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2514 transitions. Word has length 224 [2022-11-20 10:49:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:24,342 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2514 transitions. [2022-11-20 10:49:24,342 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) [2022-11-20 10:49:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2514 transitions. [2022-11-20 10:49:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 10:49:24,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:24,344 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 13, 13, 13, 13, 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] [2022-11-20 10:49:24,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-20 10:49:24,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:24,545 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1790625255, now seen corresponding path program 9 times [2022-11-20 10:49:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:24,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493594783] [2022-11-20 10:49:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:24,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:24,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629269860] [2022-11-20 10:49:24,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:49:24,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:24,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:24,559 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:24,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-20 10:49:24,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 10:49:24,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:24,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 10:49:24,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 467 proven. 56 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2022-11-20 10:49:25,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493594783] [2022-11-20 10:49:30,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629269860] [2022-11-20 10:49:30,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629269860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:30,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:30,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-20 10:49:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274191103] [2022-11-20 10:49:30,348 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:30,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:49:30,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:49:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=266, Unknown=2, NotChecked=0, Total=342 [2022-11-20 10:49:30,349 INFO L87 Difference]: Start difference. First operand 1920 states and 2514 transitions. Second operand has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 10:49:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:31,206 INFO L93 Difference]: Finished difference Result 2133 states and 2934 transitions. [2022-11-20 10:49:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:49:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 233 [2022-11-20 10:49:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:31,214 INFO L225 Difference]: With dead ends: 2133 [2022-11-20 10:49:31,214 INFO L226 Difference]: Without dead ends: 2132 [2022-11-20 10:49:31,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=144, Invalid=504, Unknown=2, NotChecked=0, Total=650 [2022-11-20 10:49:31,216 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 71 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:31,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 342 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 153 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2022-11-20 10:49:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-11-20 10:49:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1950. [2022-11-20 10:49:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1535 states have (on average 1.1433224755700326) internal successors, (1755), 1510 states have internal predecessors, (1755), 279 states have call successors, (279), 89 states have call predecessors, (279), 129 states have return successors, (521), 350 states have call predecessors, (521), 279 states have call successors, (521) [2022-11-20 10:49:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2555 transitions. [2022-11-20 10:49:31,401 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2555 transitions. Word has length 233 [2022-11-20 10:49:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:31,401 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 2555 transitions. [2022-11-20 10:49:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 10:49:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2555 transitions. [2022-11-20 10:49:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 10:49:31,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:31,403 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 12, 12, 12, 12, 12, 12, 11, 11, 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] [2022-11-20 10:49:31,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-20 10:49:31,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-11-20 10:49:31,603 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:31,604 INFO L85 PathProgramCache]: Analyzing trace with hash 496686809, now seen corresponding path program 10 times [2022-11-20 10:49:31,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:31,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123195923] [2022-11-20 10:49:31,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:31,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:31,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687703830] [2022-11-20 10:49:31,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:49:31,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:31,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:31,618 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:31,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-20 10:49:31,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:49:31,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:31,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:49:31,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 565 proven. 237 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-11-20 10:49:32,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 565 proven. 271 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-20 10:49:34,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123195923] [2022-11-20 10:49:34,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687703830] [2022-11-20 10:49:34,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687703830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:34,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:34,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 38 [2022-11-20 10:49:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833447402] [2022-11-20 10:49:34,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:34,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 10:49:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 10:49:34,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:49:34,868 INFO L87 Difference]: Start difference. First operand 1950 states and 2555 transitions. Second operand has 38 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 10:49:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:38,448 INFO L93 Difference]: Finished difference Result 6002 states and 8856 transitions. [2022-11-20 10:49:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:49:38,448 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 233 [2022-11-20 10:49:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:38,466 INFO L225 Difference]: With dead ends: 6002 [2022-11-20 10:49:38,466 INFO L226 Difference]: Without dead ends: 4182 [2022-11-20 10:49:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 424 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=522, Invalid=2900, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 10:49:38,476 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 479 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:38,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 665 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 10:49:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2022-11-20 10:49:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3341. [2022-11-20 10:49:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 2640 states have (on average 1.1643939393939393) internal successors, (3074), 2566 states have internal predecessors, (3074), 501 states have call successors, (501), 131 states have call predecessors, (501), 193 states have return successors, (1177), 643 states have call predecessors, (1177), 501 states have call successors, (1177) [2022-11-20 10:49:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 4752 transitions. [2022-11-20 10:49:38,884 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 4752 transitions. Word has length 233 [2022-11-20 10:49:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:38,884 INFO L495 AbstractCegarLoop]: Abstraction has 3341 states and 4752 transitions. [2022-11-20 10:49:38,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 20 states have call successors, (27), 5 states have call predecessors, (27), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 10:49:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 4752 transitions. [2022-11-20 10:49:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-20 10:49:38,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:38,887 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] [2022-11-20 10:49:38,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:39,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-11-20 10:49:39,092 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -131906486, now seen corresponding path program 5 times [2022-11-20 10:49:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:39,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113846323] [2022-11-20 10:49:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:39,104 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:39,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560471695] [2022-11-20 10:49:39,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:49:39,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:39,106 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-20 10:49:39,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-20 10:49:39,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:39,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:49:39,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2022-11-20 10:49:39,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:39,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113846323] [2022-11-20 10:49:39,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:39,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560471695] [2022-11-20 10:49:39,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560471695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:39,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:39,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:49:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496326846] [2022-11-20 10:49:39,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:39,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:49:39,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:49:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:49:39,369 INFO L87 Difference]: Start difference. First operand 3341 states and 4752 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) [2022-11-20 10:49:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:39,970 INFO L93 Difference]: Finished difference Result 6194 states and 8938 transitions. [2022-11-20 10:49:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:49:39,971 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 [2022-11-20 10:49:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:39,981 INFO L225 Difference]: With dead ends: 6194 [2022-11-20 10:49:39,982 INFO L226 Difference]: Without dead ends: 3302 [2022-11-20 10:49:39,994 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 [2022-11-20 10:49:39,995 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:39,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 304 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:49:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-11-20 10:49:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3297. [2022-11-20 10:49:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2608 states have (on average 1.1641104294478528) internal successors, (3036), 2532 states have internal predecessors, (3036), 493 states have call successors, (493), 129 states have call predecessors, (493), 189 states have return successors, (1143), 635 states have call predecessors, (1143), 493 states have call successors, (1143) [2022-11-20 10:49:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4672 transitions. [2022-11-20 10:49:40,433 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4672 transitions. Word has length 242 [2022-11-20 10:49:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:40,434 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 4672 transitions. [2022-11-20 10:49:40,434 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) [2022-11-20 10:49:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4672 transitions. [2022-11-20 10:49:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 10:49:40,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:40,437 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 12, 12, 12, 12, 12, 12, 12, 11, 11, 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] [2022-11-20 10:49:40,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:40,643 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1032616598, now seen corresponding path program 6 times [2022-11-20 10:49:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:40,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857477998] [2022-11-20 10:49:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:40,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:40,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125281231] [2022-11-20 10:49:40,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:49:40,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:40,652 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:40,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-20 10:49:40,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-20 10:49:40,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:40,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:49:40,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 691 proven. 20 refuted. 0 times theorem prover too weak. 831 trivial. 0 not checked. [2022-11-20 10:49:41,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 101 proven. 47 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2022-11-20 10:49:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857477998] [2022-11-20 10:49:41,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125281231] [2022-11-20 10:49:41,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125281231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:41,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:41,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2022-11-20 10:49:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080947964] [2022-11-20 10:49:41,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:41,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:49:41,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:41,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:49:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:49:41,503 INFO L87 Difference]: Start difference. First operand 3297 states and 4672 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:49:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:42,526 INFO L93 Difference]: Finished difference Result 3356 states and 4733 transitions. [2022-11-20 10:49:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:49:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 252 [2022-11-20 10:49:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:42,539 INFO L225 Difference]: With dead ends: 3356 [2022-11-20 10:49:42,539 INFO L226 Difference]: Without dead ends: 3306 [2022-11-20 10:49:42,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 483 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:49:42,544 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 143 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:42,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 506 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:49:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2022-11-20 10:49:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3301. [2022-11-20 10:49:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3301 states, 2611 states have (on average 1.1639218690157027) internal successors, (3039), 2535 states have internal predecessors, (3039), 493 states have call successors, (493), 130 states have call predecessors, (493), 190 states have return successors, (1143), 635 states have call predecessors, (1143), 493 states have call successors, (1143) [2022-11-20 10:49:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 4675 transitions. [2022-11-20 10:49:43,041 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 4675 transitions. Word has length 252 [2022-11-20 10:49:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:43,042 INFO L495 AbstractCegarLoop]: Abstraction has 3301 states and 4675 transitions. [2022-11-20 10:49:43,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:49:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 4675 transitions. [2022-11-20 10:49:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 10:49:43,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:43,044 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:43,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:43,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-20 10:49:43,251 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash -454291874, now seen corresponding path program 1 times [2022-11-20 10:49:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:43,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246572306] [2022-11-20 10:49:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:43,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:43,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310197035] [2022-11-20 10:49:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:43,263 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:43,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-20 10:49:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:43,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:49:43,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 403 proven. 36 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-20 10:49:43,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2022-11-20 10:49:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246572306] [2022-11-20 10:49:44,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310197035] [2022-11-20 10:49:44,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310197035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:44,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:44,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-20 10:49:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514866956] [2022-11-20 10:49:44,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:49:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:49:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:49:44,007 INFO L87 Difference]: Start difference. First operand 3301 states and 4675 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 10:49:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:45,025 INFO L93 Difference]: Finished difference Result 6217 states and 8894 transitions. [2022-11-20 10:49:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:49:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 244 [2022-11-20 10:49:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:45,045 INFO L225 Difference]: With dead ends: 6217 [2022-11-20 10:49:45,045 INFO L226 Difference]: Without dead ends: 3366 [2022-11-20 10:49:45,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 464 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:49:45,055 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 97 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 520 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:49:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2022-11-20 10:49:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3340. [2022-11-20 10:49:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2645 states have (on average 1.1633270321361058) internal successors, (3077), 2569 states have internal predecessors, (3077), 498 states have call successors, (498), 130 states have call predecessors, (498), 190 states have return successors, (1152), 640 states have call predecessors, (1152), 498 states have call successors, (1152) [2022-11-20 10:49:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4727 transitions. [2022-11-20 10:49:45,517 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4727 transitions. Word has length 244 [2022-11-20 10:49:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:45,518 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 4727 transitions. [2022-11-20 10:49:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 10:49:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4727 transitions. [2022-11-20 10:49:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 10:49:45,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:45,521 INFO L195 NwaCegarLoop]: trace histogram [28, 25, 16, 16, 16, 16, 14, 14, 13, 13, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:45,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:45,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-20 10:49:45,727 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 335973043, now seen corresponding path program 11 times [2022-11-20 10:49:45,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:45,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595761411] [2022-11-20 10:49:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:45,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:45,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962804459] [2022-11-20 10:49:45,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:49:45,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:45,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:45,743 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:45,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-20 10:49:45,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-11-20 10:49:45,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:45,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:49:45,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 820 proven. 224 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2022-11-20 10:49:46,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 814 proven. 258 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2022-11-20 10:49:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595761411] [2022-11-20 10:49:49,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:49,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962804459] [2022-11-20 10:49:49,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962804459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:49,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:49,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 51 [2022-11-20 10:49:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567505305] [2022-11-20 10:49:49,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 10:49:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 10:49:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 10:49:49,062 INFO L87 Difference]: Start difference. First operand 3340 states and 4727 transitions. Second operand has 51 states, 51 states have (on average 3.2549019607843137) internal successors, (166), 43 states have internal predecessors, (166), 26 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (30), 18 states have call predecessors, (30), 20 states have call successors, (30) [2022-11-20 10:49:54,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:54,827 INFO L93 Difference]: Finished difference Result 8336 states and 12685 transitions. [2022-11-20 10:49:54,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 10:49:54,828 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.2549019607843137) internal successors, (166), 43 states have internal predecessors, (166), 26 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (30), 18 states have call predecessors, (30), 20 states have call successors, (30) Word has length 277 [2022-11-20 10:49:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:54,852 INFO L225 Difference]: With dead ends: 8336 [2022-11-20 10:49:54,853 INFO L226 Difference]: Without dead ends: 5128 [2022-11-20 10:49:54,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 504 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2639 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1025, Invalid=7531, Unknown=0, NotChecked=0, Total=8556 [2022-11-20 10:49:54,867 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 607 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:54,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 848 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 10:49:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2022-11-20 10:49:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 3994. [2022-11-20 10:49:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3166 states have (on average 1.1591914087176247) internal successors, (3670), 3072 states have internal predecessors, (3670), 604 states have call successors, (604), 153 states have call predecessors, (604), 217 states have return successors, (1466), 768 states have call predecessors, (1466), 604 states have call successors, (1466) [2022-11-20 10:49:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5740 transitions. [2022-11-20 10:49:55,386 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5740 transitions. Word has length 277 [2022-11-20 10:49:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:55,387 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5740 transitions. [2022-11-20 10:49:55,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.2549019607843137) internal successors, (166), 43 states have internal predecessors, (166), 26 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (30), 18 states have call predecessors, (30), 20 states have call successors, (30) [2022-11-20 10:49:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5740 transitions. [2022-11-20 10:49:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-20 10:49:55,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:55,390 INFO L195 NwaCegarLoop]: trace histogram [34, 32, 19, 19, 19, 19, 18, 18, 17, 17, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:55,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:55,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:55,597 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -925327856, now seen corresponding path program 12 times [2022-11-20 10:49:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138117209] [2022-11-20 10:49:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:55,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:55,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:55,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119770123] [2022-11-20 10:49:55,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:49:55,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:55,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:55,612 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:55,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-20 10:49:55,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-20 10:49:55,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:55,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:49:55,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3238 backedges. 1856 proven. 9 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2022-11-20 10:49:56,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3238 backedges. 598 proven. 243 refuted. 0 times theorem prover too weak. 2397 trivial. 0 not checked. [2022-11-20 10:49:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:57,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138117209] [2022-11-20 10:49:57,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:57,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119770123] [2022-11-20 10:49:57,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119770123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:57,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:49:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2022-11-20 10:49:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221874179] [2022-11-20 10:49:57,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:57,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:49:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:49:57,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:49:57,584 INFO L87 Difference]: Start difference. First operand 3994 states and 5740 transitions. Second operand has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 10:49:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:58,838 INFO L93 Difference]: Finished difference Result 8330 states and 12135 transitions. [2022-11-20 10:49:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:49:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) Word has length 346 [2022-11-20 10:49:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:58,856 INFO L225 Difference]: With dead ends: 8330 [2022-11-20 10:49:58,856 INFO L226 Difference]: Without dead ends: 4166 [2022-11-20 10:49:58,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 661 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:49:58,871 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 178 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:58,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 272 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:49:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2022-11-20 10:49:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3999. [2022-11-20 10:49:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3170 states have (on average 1.1589905362776025) internal successors, (3674), 3076 states have internal predecessors, (3674), 604 states have call successors, (604), 153 states have call predecessors, (604), 218 states have return successors, (1507), 769 states have call predecessors, (1507), 604 states have call successors, (1507) [2022-11-20 10:49:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5785 transitions. [2022-11-20 10:49:59,289 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5785 transitions. Word has length 346 [2022-11-20 10:49:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:59,289 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5785 transitions. [2022-11-20 10:49:59,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 15 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 10:49:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5785 transitions. [2022-11-20 10:49:59,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-20 10:49:59,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:59,293 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:59,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:59,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:59,499 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:49:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash -330811452, now seen corresponding path program 2 times [2022-11-20 10:49:59,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:59,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523637325] [2022-11-20 10:49:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:59,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:49:59,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313018332] [2022-11-20 10:49:59,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:49:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:59,518 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:59,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-20 10:49:59,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:49:59,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:49:59,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:49:59,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2022-11-20 10:49:59,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:59,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523637325] [2022-11-20 10:49:59,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:49:59,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313018332] [2022-11-20 10:49:59,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313018332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:59,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:59,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:49:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359778905] [2022-11-20 10:49:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:49:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:49:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:49:59,679 INFO L87 Difference]: Start difference. First operand 3999 states and 5785 transitions. Second operand has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:00,148 INFO L93 Difference]: Finished difference Result 4001 states and 5785 transitions. [2022-11-20 10:50:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 318 [2022-11-20 10:50:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:00,165 INFO L225 Difference]: With dead ends: 4001 [2022-11-20 10:50:00,165 INFO L226 Difference]: Without dead ends: 3997 [2022-11-20 10:50:00,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:00,169 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 26 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:00,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 219 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:50:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2022-11-20 10:50:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3995. [2022-11-20 10:50:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3167 states have (on average 1.1057783391221976) internal successors, (3502), 3073 states have internal predecessors, (3502), 604 states have call successors, (604), 153 states have call predecessors, (604), 218 states have return successors, (1504), 768 states have call predecessors, (1504), 604 states have call successors, (1504) [2022-11-20 10:50:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5610 transitions. [2022-11-20 10:50:00,636 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5610 transitions. Word has length 318 [2022-11-20 10:50:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:00,636 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 5610 transitions. [2022-11-20 10:50:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5610 transitions. [2022-11-20 10:50:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-20 10:50:00,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:00,640 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 19, 19, 19, 19, 19, 19, 18, 18, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:00,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-11-20 10:50:00,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:00,843 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1370824243, now seen corresponding path program 13 times [2022-11-20 10:50:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577540454] [2022-11-20 10:50:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:00,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757565184] [2022-11-20 10:50:00,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:50:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:00,859 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:00,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-20 10:50:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3355 backedges. 1811 proven. 90 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2022-11-20 10:50:01,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3355 backedges. 457 proven. 297 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2022-11-20 10:50:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577540454] [2022-11-20 10:50:02,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:02,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757565184] [2022-11-20 10:50:02,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757565184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:02,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:02,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 19 [2022-11-20 10:50:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400562161] [2022-11-20 10:50:02,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:02,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:50:02,488 INFO L87 Difference]: Start difference. First operand 3995 states and 5610 transitions. Second operand has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-20 10:50:03,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:03,649 INFO L93 Difference]: Finished difference Result 7666 states and 10837 transitions. [2022-11-20 10:50:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:50:03,650 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) Word has length 351 [2022-11-20 10:50:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:03,664 INFO L225 Difference]: With dead ends: 7666 [2022-11-20 10:50:03,665 INFO L226 Difference]: Without dead ends: 3657 [2022-11-20 10:50:03,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 673 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:50:03,678 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 79 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:03,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 407 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:50:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2022-11-20 10:50:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3350. [2022-11-20 10:50:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 2648 states have (on average 1.1053625377643506) internal successors, (2927), 2577 states have internal predecessors, (2927), 504 states have call successors, (504), 133 states have call predecessors, (504), 192 states have return successors, (1192), 639 states have call predecessors, (1192), 499 states have call successors, (1192) [2022-11-20 10:50:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4623 transitions. [2022-11-20 10:50:04,146 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4623 transitions. Word has length 351 [2022-11-20 10:50:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:04,147 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 4623 transitions. [2022-11-20 10:50:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.0) internal successors, (102), 19 states have internal predecessors, (102), 12 states have call successors, (23), 2 states have call predecessors, (23), 6 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2022-11-20 10:50:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4623 transitions. [2022-11-20 10:50:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-20 10:50:04,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:04,151 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:04,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:04,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-11-20 10:50:04,357 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash 319395959, now seen corresponding path program 3 times [2022-11-20 10:50:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731958351] [2022-11-20 10:50:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:04,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:04,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153093827] [2022-11-20 10:50:04,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:04,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:04,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:04,373 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:04,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-20 10:50:04,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 10:50:04,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:04,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 10:50:04,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2807 backedges. 278 proven. 60 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2022-11-20 10:50:05,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:08,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:08,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731958351] [2022-11-20 10:50:08,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:08,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153093827] [2022-11-20 10:50:08,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153093827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:08,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:08,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-20 10:50:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949876477] [2022-11-20 10:50:08,164 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:08,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:08,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:08,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=491, Unknown=1, NotChecked=0, Total=552 [2022-11-20 10:50:08,165 INFO L87 Difference]: Start difference. First operand 3350 states and 4623 transitions. Second operand has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 10:50:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:09,521 INFO L93 Difference]: Finished difference Result 6020 states and 8395 transitions. [2022-11-20 10:50:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:50:09,522 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 345 [2022-11-20 10:50:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:09,536 INFO L225 Difference]: With dead ends: 6020 [2022-11-20 10:50:09,536 INFO L226 Difference]: Without dead ends: 3247 [2022-11-20 10:50:09,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=106, Invalid=885, Unknown=1, NotChecked=0, Total=992 [2022-11-20 10:50:09,548 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 86 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:09,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 562 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:50:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-11-20 10:50:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3238. [2022-11-20 10:50:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 2555 states have (on average 1.1021526418786693) internal successors, (2816), 2482 states have internal predecessors, (2816), 485 states have call successors, (485), 133 states have call predecessors, (485), 192 states have return successors, (1156), 622 states have call predecessors, (1156), 480 states have call successors, (1156) [2022-11-20 10:50:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4457 transitions. [2022-11-20 10:50:10,136 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4457 transitions. Word has length 345 [2022-11-20 10:50:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:10,137 INFO L495 AbstractCegarLoop]: Abstraction has 3238 states and 4457 transitions. [2022-11-20 10:50:10,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 10:50:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4457 transitions. [2022-11-20 10:50:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-20 10:50:10,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:10,141 INFO L195 NwaCegarLoop]: trace histogram [36, 34, 21, 21, 21, 21, 20, 20, 19, 19, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:10,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-11-20 10:50:10,347 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -412462512, now seen corresponding path program 14 times [2022-11-20 10:50:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:10,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171523317] [2022-11-20 10:50:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:10,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:10,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105080504] [2022-11-20 10:50:10,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:10,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:10,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:10,365 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:10,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-20 10:50:10,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:10,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:10,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:50:10,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 1835 proven. 9 refuted. 0 times theorem prover too weak. 1888 trivial. 0 not checked. [2022-11-20 10:50:10,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3732 backedges. 673 proven. 192 refuted. 0 times theorem prover too weak. 2867 trivial. 0 not checked. [2022-11-20 10:50:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:11,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171523317] [2022-11-20 10:50:11,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:11,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105080504] [2022-11-20 10:50:11,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105080504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:11,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:11,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 24 [2022-11-20 10:50:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036423451] [2022-11-20 10:50:11,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:11,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:50:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:50:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:50:11,802 INFO L87 Difference]: Start difference. First operand 3238 states and 4457 transitions. Second operand has 24 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 13 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-20 10:50:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:13,372 INFO L93 Difference]: Finished difference Result 3751 states and 5125 transitions. [2022-11-20 10:50:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:50:13,373 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 13 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) Word has length 366 [2022-11-20 10:50:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:13,386 INFO L225 Difference]: With dead ends: 3751 [2022-11-20 10:50:13,387 INFO L226 Difference]: Without dead ends: 3389 [2022-11-20 10:50:13,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 700 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:50:13,391 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 154 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:13,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 778 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:50:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-11-20 10:50:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3334. [2022-11-20 10:50:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 2635 states have (on average 1.100189753320683) internal successors, (2899), 2556 states have internal predecessors, (2899), 498 states have call successors, (498), 131 states have call predecessors, (498), 195 states have return successors, (1111), 646 states have call predecessors, (1111), 498 states have call successors, (1111) [2022-11-20 10:50:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 4508 transitions. [2022-11-20 10:50:13,880 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 4508 transitions. Word has length 366 [2022-11-20 10:50:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:13,881 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 4508 transitions. [2022-11-20 10:50:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 13 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-20 10:50:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 4508 transitions. [2022-11-20 10:50:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-20 10:50:13,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:13,885 INFO L195 NwaCegarLoop]: trace histogram [37, 35, 22, 22, 22, 22, 21, 21, 20, 20, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:13,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:14,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-20 10:50:14,092 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1007022928, now seen corresponding path program 15 times [2022-11-20 10:50:14,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:14,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965441469] [2022-11-20 10:50:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:14,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:14,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364015039] [2022-11-20 10:50:14,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:14,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:14,105 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:14,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-20 10:50:14,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 10:50:14,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:14,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 10:50:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3994 backedges. 1070 proven. 78 refuted. 0 times theorem prover too weak. 2846 trivial. 0 not checked. [2022-11-20 10:50:15,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965441469] [2022-11-20 10:50:17,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:17,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364015039] [2022-11-20 10:50:17,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364015039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:17,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:17,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-20 10:50:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628965964] [2022-11-20 10:50:17,525 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:17,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:50:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:50:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:50:17,526 INFO L87 Difference]: Start difference. First operand 3334 states and 4508 transitions. Second operand has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 10:50:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:18,726 INFO L93 Difference]: Finished difference Result 3503 states and 5042 transitions. [2022-11-20 10:50:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:50:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 376 [2022-11-20 10:50:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:18,741 INFO L225 Difference]: With dead ends: 3503 [2022-11-20 10:50:18,742 INFO L226 Difference]: Without dead ends: 3502 [2022-11-20 10:50:18,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:50:18,745 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 57 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:18,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 442 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 291 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2022-11-20 10:50:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2022-11-20 10:50:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3362. [2022-11-20 10:50:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 2657 states have (on average 1.0986074520135491) internal successors, (2919), 2579 states have internal predecessors, (2919), 498 states have call successors, (498), 131 states have call predecessors, (498), 201 states have return successors, (1123), 651 states have call predecessors, (1123), 498 states have call successors, (1123) [2022-11-20 10:50:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 4540 transitions. [2022-11-20 10:50:19,265 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 4540 transitions. Word has length 376 [2022-11-20 10:50:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:19,265 INFO L495 AbstractCegarLoop]: Abstraction has 3362 states and 4540 transitions. [2022-11-20 10:50:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 19 states have internal predecessors, (70), 5 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 10:50:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 4540 transitions. [2022-11-20 10:50:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-11-20 10:50:19,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:19,270 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 22, 22, 22, 22, 22, 22, 21, 21, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:19,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:19,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-11-20 10:50:19,476 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1363457709, now seen corresponding path program 16 times [2022-11-20 10:50:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:19,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603624174] [2022-11-20 10:50:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:19,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:19,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037946159] [2022-11-20 10:50:19,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:50:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:19,493 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:19,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-20 10:50:19,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:50:19,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:19,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:50:19,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 1175 proven. 323 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2022-11-20 10:50:20,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4126 backedges. 1175 proven. 344 refuted. 0 times theorem prover too weak. 2607 trivial. 0 not checked. [2022-11-20 10:50:21,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:21,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603624174] [2022-11-20 10:50:21,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:21,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037946159] [2022-11-20 10:50:21,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037946159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:21,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:21,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 25 [2022-11-20 10:50:21,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243081396] [2022-11-20 10:50:21,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:21,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:50:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:50:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:50:21,643 INFO L87 Difference]: Start difference. First operand 3362 states and 4540 transitions. Second operand has 25 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2022-11-20 10:50:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:23,676 INFO L93 Difference]: Finished difference Result 6882 states and 9539 transitions. [2022-11-20 10:50:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 10:50:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) Word has length 381 [2022-11-20 10:50:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:23,691 INFO L225 Difference]: With dead ends: 6882 [2022-11-20 10:50:23,692 INFO L226 Difference]: Without dead ends: 3760 [2022-11-20 10:50:23,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 729 SyntacticMatches, 13 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1401, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:50:23,703 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 282 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:23,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 478 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:50:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2022-11-20 10:50:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3403. [2022-11-20 10:50:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2689 states have (on average 1.0955745630345854) internal successors, (2946), 2611 states have internal predecessors, (2946), 504 states have call successors, (504), 135 states have call predecessors, (504), 204 states have return successors, (1178), 656 states have call predecessors, (1178), 504 states have call successors, (1178) [2022-11-20 10:50:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4628 transitions. [2022-11-20 10:50:24,032 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4628 transitions. Word has length 381 [2022-11-20 10:50:24,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:24,033 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 4628 transitions. [2022-11-20 10:50:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (21), 3 states have call predecessors, (21), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2022-11-20 10:50:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4628 transitions. [2022-11-20 10:50:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-20 10:50:24,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:24,036 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 23, 23, 23, 23, 23, 23, 22, 22, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:24,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-11-20 10:50:24,242 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 30691789, now seen corresponding path program 17 times [2022-11-20 10:50:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320679519] [2022-11-20 10:50:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:24,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776579203] [2022-11-20 10:50:24,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:50:24,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:24,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:24,255 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:24,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-20 10:50:24,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-11-20 10:50:24,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:50:24,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4403 backedges. 1359 proven. 434 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2022-11-20 10:50:25,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4403 backedges. 1335 proven. 504 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2022-11-20 10:50:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:28,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320679519] [2022-11-20 10:50:28,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:28,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776579203] [2022-11-20 10:50:28,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776579203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:28,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:28,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 47 [2022-11-20 10:50:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332755280] [2022-11-20 10:50:28,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 10:50:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 10:50:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 10:50:28,191 INFO L87 Difference]: Start difference. First operand 3403 states and 4628 transitions. Second operand has 47 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 43 states have internal predecessors, (178), 25 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 20 states have call predecessors, (35), 23 states have call successors, (35) [2022-11-20 10:50:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:32,988 INFO L93 Difference]: Finished difference Result 7068 states and 9879 transitions. [2022-11-20 10:50:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 10:50:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 43 states have internal predecessors, (178), 25 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 20 states have call predecessors, (35), 23 states have call successors, (35) Word has length 391 [2022-11-20 10:50:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:32,998 INFO L225 Difference]: With dead ends: 7068 [2022-11-20 10:50:32,998 INFO L226 Difference]: Without dead ends: 3859 [2022-11-20 10:50:33,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 732 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=837, Invalid=6135, Unknown=0, NotChecked=0, Total=6972 [2022-11-20 10:50:33,005 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 412 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:33,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1013 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:50:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2022-11-20 10:50:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3391. [2022-11-20 10:50:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3391 states, 2679 states have (on average 1.0951847704367301) internal successors, (2934), 2602 states have internal predecessors, (2934), 505 states have call successors, (505), 136 states have call predecessors, (505), 201 states have return successors, (1140), 652 states have call predecessors, (1140), 505 states have call successors, (1140) [2022-11-20 10:50:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4579 transitions. [2022-11-20 10:50:33,410 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4579 transitions. Word has length 391 [2022-11-20 10:50:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:33,411 INFO L495 AbstractCegarLoop]: Abstraction has 3391 states and 4579 transitions. [2022-11-20 10:50:33,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 3.9555555555555557) internal successors, (178), 43 states have internal predecessors, (178), 25 states have call successors, (35), 5 states have call predecessors, (35), 10 states have return successors, (35), 20 states have call predecessors, (35), 23 states have call successors, (35) [2022-11-20 10:50:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4579 transitions. [2022-11-20 10:50:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-20 10:50:33,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:33,415 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 21, 13, 13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:50:33,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:33,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-11-20 10:50:33,622 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:33,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2139271755, now seen corresponding path program 1 times [2022-11-20 10:50:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:33,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498862587] [2022-11-20 10:50:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:33,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309471865] [2022-11-20 10:50:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:33,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:33,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:33,641 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-20 10:50:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:33,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:50:33,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 914 proven. 3 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2022-11-20 10:50:34,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 272 proven. 29 refuted. 0 times theorem prover too weak. 2883 trivial. 0 not checked. [2022-11-20 10:50:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:34,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498862587] [2022-11-20 10:50:34,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:34,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309471865] [2022-11-20 10:50:34,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309471865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:34,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:34,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-11-20 10:50:34,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753685106] [2022-11-20 10:50:34,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:34,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:50:34,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:50:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:50:34,600 INFO L87 Difference]: Start difference. First operand 3391 states and 4579 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-20 10:50:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:35,281 INFO L93 Difference]: Finished difference Result 6639 states and 9010 transitions. [2022-11-20 10:50:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:35,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 386 [2022-11-20 10:50:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:35,288 INFO L225 Difference]: With dead ends: 6639 [2022-11-20 10:50:35,288 INFO L226 Difference]: Without dead ends: 3039 [2022-11-20 10:50:35,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 757 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:50:35,295 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 64 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:35,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 247 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-11-20 10:50:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 3013. [2022-11-20 10:50:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 2371 states have (on average 1.1050189793336145) internal successors, (2620), 2343 states have internal predecessors, (2620), 435 states have call successors, (435), 136 states have call predecessors, (435), 201 states have return successors, (966), 533 states have call predecessors, (966), 434 states have call successors, (966) [2022-11-20 10:50:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 4021 transitions. [2022-11-20 10:50:35,535 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 4021 transitions. Word has length 386 [2022-11-20 10:50:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:35,535 INFO L495 AbstractCegarLoop]: Abstraction has 3013 states and 4021 transitions. [2022-11-20 10:50:35,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-20 10:50:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 4021 transitions. [2022-11-20 10:50:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-20 10:50:35,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:35,539 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 21, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:50:35,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-20 10:50:35,746 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash 777651285, now seen corresponding path program 2 times [2022-11-20 10:50:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:35,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416315636] [2022-11-20 10:50:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:35,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:35,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:35,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952586246] [2022-11-20 10:50:35,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:35,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:35,764 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:35,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-20 10:50:35,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:35,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:50:35,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2022-11-20 10:50:36,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2022-11-20 10:50:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:36,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416315636] [2022-11-20 10:50:36,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:36,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952586246] [2022-11-20 10:50:36,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952586246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:36,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:36,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 10:50:36,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858253867] [2022-11-20 10:50:36,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:36,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:50:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:50:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:50:36,697 INFO L87 Difference]: Start difference. First operand 3013 states and 4021 transitions. Second operand has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-20 10:50:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:38,902 INFO L93 Difference]: Finished difference Result 3710 states and 5045 transitions. [2022-11-20 10:50:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-20 10:50:38,902 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 396 [2022-11-20 10:50:38,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:38,910 INFO L225 Difference]: With dead ends: 3710 [2022-11-20 10:50:38,910 INFO L226 Difference]: Without dead ends: 3685 [2022-11-20 10:50:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1509, Invalid=5463, Unknown=0, NotChecked=0, Total=6972 [2022-11-20 10:50:38,913 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 259 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:38,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 543 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:50:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2022-11-20 10:50:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 2347. [2022-11-20 10:50:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1835 states have (on average 1.0811989100817438) internal successors, (1984), 1818 states have internal predecessors, (1984), 328 states have call successors, (328), 122 states have call predecessors, (328), 179 states have return successors, (727), 406 states have call predecessors, (727), 324 states have call successors, (727) [2022-11-20 10:50:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3039 transitions. [2022-11-20 10:50:39,152 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3039 transitions. Word has length 396 [2022-11-20 10:50:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:39,152 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 3039 transitions. [2022-11-20 10:50:39,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-20 10:50:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3039 transitions. [2022-11-20 10:50:39,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-11-20 10:50:39,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:39,156 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 21, 18, 18, 18, 18, 18, 18, 18, 18, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:39,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-20 10:50:39,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:39,357 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1064699741, now seen corresponding path program 4 times [2022-11-20 10:50:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:39,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715242485] [2022-11-20 10:50:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:39,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:39,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313235425] [2022-11-20 10:50:39,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:50:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:39,372 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:39,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-20 10:50:39,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:50:39,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:39,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:50:39,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4277 backedges. 1637 proven. 0 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2022-11-20 10:50:39,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:39,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715242485] [2022-11-20 10:50:39,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:39,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313235425] [2022-11-20 10:50:39,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313235425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:39,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:39,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:50:39,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261465483] [2022-11-20 10:50:39,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:50:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:39,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:50:39,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:50:39,663 INFO L87 Difference]: Start difference. First operand 2347 states and 3039 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:50:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:40,106 INFO L93 Difference]: Finished difference Result 4260 states and 5560 transitions. [2022-11-20 10:50:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:50:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 419 [2022-11-20 10:50:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:40,113 INFO L225 Difference]: With dead ends: 4260 [2022-11-20 10:50:40,113 INFO L226 Difference]: Without dead ends: 2348 [2022-11-20 10:50:40,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:50:40,116 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 29 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:40,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 176 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:50:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-11-20 10:50:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2313. [2022-11-20 10:50:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1802 states have (on average 1.0821309655937847) internal successors, (1950), 1800 states have internal predecessors, (1950), 328 states have call successors, (328), 122 states have call predecessors, (328), 178 states have return successors, (710), 390 states have call predecessors, (710), 324 states have call successors, (710) [2022-11-20 10:50:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2988 transitions. [2022-11-20 10:50:40,378 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2988 transitions. Word has length 419 [2022-11-20 10:50:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:40,378 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 2988 transitions. [2022-11-20 10:50:40,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:50:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2988 transitions. [2022-11-20 10:50:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-20 10:50:40,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:40,381 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 21, 19, 19, 19, 19, 19, 19, 19, 19, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:40,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-11-20 10:50:40,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:40,582 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:40,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash 647322877, now seen corresponding path program 5 times [2022-11-20 10:50:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:40,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707094700] [2022-11-20 10:50:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:40,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227605876] [2022-11-20 10:50:40,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:50:40,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:40,595 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-20 10:50:40,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-20 10:50:40,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:40,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:50:40,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 1551 proven. 226 refuted. 0 times theorem prover too weak. 2764 trivial. 0 not checked. [2022-11-20 10:50:41,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 107 proven. 250 refuted. 0 times theorem prover too weak. 4184 trivial. 0 not checked. [2022-11-20 10:50:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707094700] [2022-11-20 10:50:42,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:42,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227605876] [2022-11-20 10:50:42,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227605876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:42,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:42,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-11-20 10:50:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021772297] [2022-11-20 10:50:42,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 10:50:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 10:50:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2022-11-20 10:50:42,170 INFO L87 Difference]: Start difference. First operand 2313 states and 2988 transitions. Second operand has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2022-11-20 10:50:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:44,065 INFO L93 Difference]: Finished difference Result 4184 states and 5469 transitions. [2022-11-20 10:50:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:50:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) Word has length 429 [2022-11-20 10:50:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:44,071 INFO L225 Difference]: With dead ends: 4184 [2022-11-20 10:50:44,071 INFO L226 Difference]: Without dead ends: 2417 [2022-11-20 10:50:44,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 824 SyntacticMatches, 10 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=346, Invalid=2006, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 10:50:44,075 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 180 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:44,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 515 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:50:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2022-11-20 10:50:44,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2398. [2022-11-20 10:50:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1873 states have (on average 1.0816871329418045) internal successors, (2026), 1875 states have internal predecessors, (2026), 342 states have call successors, (342), 122 states have call predecessors, (342), 178 states have return successors, (726), 400 states have call predecessors, (726), 336 states have call successors, (726) [2022-11-20 10:50:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3094 transitions. [2022-11-20 10:50:44,350 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3094 transitions. Word has length 429 [2022-11-20 10:50:44,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:44,350 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 3094 transitions. [2022-11-20 10:50:44,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.066666666666666) internal successors, (122), 30 states have internal predecessors, (122), 13 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2022-11-20 10:50:44,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3094 transitions. [2022-11-20 10:50:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-20 10:50:44,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:44,355 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 25, 25, 25, 25, 25, 25, 25, 25, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:44,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-20 10:50:44,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-11-20 10:50:44,555 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1960927721, now seen corresponding path program 6 times [2022-11-20 10:50:44,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587785158] [2022-11-20 10:50:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:44,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:44,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750703984] [2022-11-20 10:50:44,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:50:44,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:44,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:44,570 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:44,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-20 10:50:44,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-20 10:50:44,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:44,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:50:44,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7039 backedges. 539 proven. 2 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2022-11-20 10:50:44,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7039 backedges. 539 proven. 3 refuted. 0 times theorem prover too weak. 6497 trivial. 0 not checked. [2022-11-20 10:50:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:45,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587785158] [2022-11-20 10:50:45,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:45,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750703984] [2022-11-20 10:50:45,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750703984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:45,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:45,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2022-11-20 10:50:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803867211] [2022-11-20 10:50:45,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:45,477 INFO L87 Difference]: Start difference. First operand 2398 states and 3094 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 10:50:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:46,083 INFO L93 Difference]: Finished difference Result 2408 states and 3102 transitions. [2022-11-20 10:50:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:50:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 523 [2022-11-20 10:50:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:46,089 INFO L225 Difference]: With dead ends: 2408 [2022-11-20 10:50:46,089 INFO L226 Difference]: Without dead ends: 2389 [2022-11-20 10:50:46,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1029 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:50:46,090 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:46,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 270 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:50:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2022-11-20 10:50:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2382. [2022-11-20 10:50:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1861 states have (on average 1.0822138635142398) internal successors, (2014), 1863 states have internal predecessors, (2014), 339 states have call successors, (339), 121 states have call predecessors, (339), 177 states have return successors, (686), 397 states have call predecessors, (686), 333 states have call successors, (686) [2022-11-20 10:50:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3039 transitions. [2022-11-20 10:50:46,329 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3039 transitions. Word has length 523 [2022-11-20 10:50:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:46,329 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3039 transitions. [2022-11-20 10:50:46,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 10:50:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3039 transitions. [2022-11-20 10:50:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-11-20 10:50:46,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:46,333 INFO L195 NwaCegarLoop]: trace histogram [51, 48, 29, 29, 29, 29, 27, 27, 26, 26, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:50:46,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:46,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-11-20 10:50:46,533 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:46,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash 952471875, now seen corresponding path program 7 times [2022-11-20 10:50:46,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:46,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082626049] [2022-11-20 10:50:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:46,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:46,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425874728] [2022-11-20 10:50:46,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:50:46,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:46,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:46,554 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:46,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-20 10:50:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:46,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:50:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7543 backedges. 2411 proven. 100 refuted. 0 times theorem prover too weak. 5032 trivial. 0 not checked. [2022-11-20 10:50:47,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7543 backedges. 537 proven. 214 refuted. 0 times theorem prover too weak. 6792 trivial. 0 not checked. [2022-11-20 10:50:47,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082626049] [2022-11-20 10:50:47,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:47,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425874728] [2022-11-20 10:50:47,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425874728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:47,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:47,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2022-11-20 10:50:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584384023] [2022-11-20 10:50:47,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:47,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:50:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:50:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:50:47,872 INFO L87 Difference]: Start difference. First operand 2382 states and 3039 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 10:50:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:48,934 INFO L93 Difference]: Finished difference Result 3085 states and 3916 transitions. [2022-11-20 10:50:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:50:48,934 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) Word has length 539 [2022-11-20 10:50:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:48,941 INFO L225 Difference]: With dead ends: 3085 [2022-11-20 10:50:48,941 INFO L226 Difference]: Without dead ends: 2382 [2022-11-20 10:50:48,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 1046 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 10:50:48,944 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 114 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:48,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 490 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:50:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2022-11-20 10:50:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2022-11-20 10:50:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1861 states have (on average 1.0800644814615799) internal successors, (2010), 1863 states have internal predecessors, (2010), 339 states have call successors, (339), 121 states have call predecessors, (339), 177 states have return successors, (686), 397 states have call predecessors, (686), 333 states have call successors, (686) [2022-11-20 10:50:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3035 transitions. [2022-11-20 10:50:49,203 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3035 transitions. Word has length 539 [2022-11-20 10:50:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3035 transitions. [2022-11-20 10:50:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 10:50:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3035 transitions. [2022-11-20 10:50:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-20 10:50:49,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:49,207 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 22, 22, 22, 22, 22, 22, 22, 21, 21, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:50:49,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-20 10:50:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:49,407 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1533772163, now seen corresponding path program 8 times [2022-11-20 10:50:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:49,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142598358] [2022-11-20 10:50:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:49,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:49,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798903991] [2022-11-20 10:50:49,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:50:49,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:49,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:49,431 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:49,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-20 10:50:49,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:50:49,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:49,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:50:49,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5556 backedges. 2013 proven. 9 refuted. 0 times theorem prover too weak. 3534 trivial. 0 not checked. [2022-11-20 10:50:49,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5556 backedges. 477 proven. 62 refuted. 0 times theorem prover too weak. 5017 trivial. 0 not checked. [2022-11-20 10:50:50,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142598358] [2022-11-20 10:50:50,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:50:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798903991] [2022-11-20 10:50:50,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798903991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:50,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:50:50,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 10:50:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223108402] [2022-11-20 10:50:50,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:50:50,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:50:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:50:50,599 INFO L87 Difference]: Start difference. First operand 2382 states and 3035 transitions. Second operand has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 9 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-20 10:50:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:51,298 INFO L93 Difference]: Finished difference Result 4070 states and 5267 transitions. [2022-11-20 10:50:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:50:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 9 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 9 states have call successors, (18) Word has length 479 [2022-11-20 10:50:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:51,306 INFO L225 Difference]: With dead ends: 4070 [2022-11-20 10:50:51,306 INFO L226 Difference]: Without dead ends: 2217 [2022-11-20 10:50:51,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 939 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:50:51,312 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 63 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:51,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 272 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:50:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2022-11-20 10:50:51,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2157. [2022-11-20 10:50:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1683 states have (on average 1.0790255496137848) internal successors, (1816), 1682 states have internal predecessors, (1816), 304 states have call successors, (304), 113 states have call predecessors, (304), 165 states have return successors, (635), 361 states have call predecessors, (635), 301 states have call successors, (635) [2022-11-20 10:50:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2755 transitions. [2022-11-20 10:50:51,589 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2755 transitions. Word has length 479 [2022-11-20 10:50:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:51,590 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 2755 transitions. [2022-11-20 10:50:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 9 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-20 10:50:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2755 transitions. [2022-11-20 10:50:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-11-20 10:50:51,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:51,593 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 21, 21, 21, 21, 21, 21, 20, 20, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:50:51,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-11-20 10:50:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:51,793 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:50:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash 268317001, now seen corresponding path program 9 times [2022-11-20 10:50:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:51,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373252464] [2022-11-20 10:50:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:51,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:50:51,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152825924] [2022-11-20 10:50:51,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:50:51,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:51,808 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:51,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-20 10:50:52,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 10:50:52,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:50:52,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-20 10:50:52,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4642 backedges. 1277 proven. 247 refuted. 2 times theorem prover too weak. 3116 trivial. 0 not checked. [2022-11-20 10:51:37,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373252464] [2022-11-20 10:51:39,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:51:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152825924] [2022-11-20 10:51:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152825924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:39,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:51:39,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-20 10:51:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017807626] [2022-11-20 10:51:39,785 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 10:51:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 10:51:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1332, Unknown=18, NotChecked=0, Total=1482 [2022-11-20 10:51:39,787 INFO L87 Difference]: Start difference. First operand 2157 states and 2755 transitions. Second operand has 37 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 10 states have call successors, (14), 3 states have call predecessors, (14), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:52:03,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:03,088 INFO L93 Difference]: Finished difference Result 2959 states and 3997 transitions. [2022-11-20 10:52:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:52:03,089 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 10 states have call successors, (14), 3 states have call predecessors, (14), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) Word has length 435 [2022-11-20 10:52:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:03,098 INFO L225 Difference]: With dead ends: 2959 [2022-11-20 10:52:03,098 INFO L226 Difference]: Without dead ends: 2426 [2022-11-20 10:52:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 404 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 65.7s TimeCoverageRelationStatistics Valid=234, Invalid=2500, Unknown=22, NotChecked=0, Total=2756 [2022-11-20 10:52:03,101 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 94 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:03,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1137 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1186 Invalid, 0 Unknown, 333 Unchecked, 1.0s Time] [2022-11-20 10:52:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-11-20 10:52:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2221. [2022-11-20 10:52:03,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 1734 states have (on average 1.0778546712802768) internal successors, (1869), 1734 states have internal predecessors, (1869), 313 states have call successors, (313), 118 states have call predecessors, (313), 169 states have return successors, (666), 368 states have call predecessors, (666), 308 states have call successors, (666) [2022-11-20 10:52:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2848 transitions. [2022-11-20 10:52:03,450 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2848 transitions. Word has length 435 [2022-11-20 10:52:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:03,451 INFO L495 AbstractCegarLoop]: Abstraction has 2221 states and 2848 transitions. [2022-11-20 10:52:03,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 10 states have call successors, (14), 3 states have call predecessors, (14), 8 states have return successors, (16), 12 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:52:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2848 transitions. [2022-11-20 10:52:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-20 10:52:03,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:03,456 INFO L195 NwaCegarLoop]: trace histogram [42, 39, 23, 23, 23, 23, 21, 21, 20, 20, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:03,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:03,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-11-20 10:52:03,663 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1281506263, now seen corresponding path program 10 times [2022-11-20 10:52:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:03,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038203649] [2022-11-20 10:52:03,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:03,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:03,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:03,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254148834] [2022-11-20 10:52:03,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:52:03,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:03,678 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:03,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-20 10:52:03,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:52:03,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:03,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 10:52:03,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4933 backedges. 1858 proven. 350 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2022-11-20 10:52:04,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4933 backedges. 1858 proven. 401 refuted. 0 times theorem prover too weak. 2674 trivial. 0 not checked. [2022-11-20 10:52:08,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:08,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038203649] [2022-11-20 10:52:08,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:08,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254148834] [2022-11-20 10:52:08,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254148834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:08,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:08,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 34] total 47 [2022-11-20 10:52:08,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286489463] [2022-11-20 10:52:08,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:08,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 10:52:08,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 10:52:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 10:52:08,028 INFO L87 Difference]: Start difference. First operand 2221 states and 2848 transitions. Second operand has 47 states, 43 states have (on average 4.325581395348837) internal successors, (186), 44 states have internal predecessors, (186), 25 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (31), 14 states have call predecessors, (31), 17 states have call successors, (31) [2022-11-20 10:52:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:15,321 INFO L93 Difference]: Finished difference Result 5972 states and 8476 transitions. [2022-11-20 10:52:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-20 10:52:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 4.325581395348837) internal successors, (186), 44 states have internal predecessors, (186), 25 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (31), 14 states have call predecessors, (31), 17 states have call successors, (31) Word has length 445 [2022-11-20 10:52:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:15,340 INFO L225 Difference]: With dead ends: 5972 [2022-11-20 10:52:15,341 INFO L226 Difference]: Without dead ends: 4341 [2022-11-20 10:52:15,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 840 SyntacticMatches, 9 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2902 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1430, Invalid=10342, Unknown=0, NotChecked=0, Total=11772 [2022-11-20 10:52:15,351 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 646 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 4024 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:15,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 886 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4024 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 10:52:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2022-11-20 10:52:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3368. [2022-11-20 10:52:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2666 states have (on average 1.0907726931732933) internal successors, (2908), 2644 states have internal predecessors, (2908), 481 states have call successors, (481), 168 states have call predecessors, (481), 216 states have return successors, (1167), 555 states have call predecessors, (1167), 476 states have call successors, (1167) [2022-11-20 10:52:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4556 transitions. [2022-11-20 10:52:15,910 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4556 transitions. Word has length 445 [2022-11-20 10:52:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:15,910 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 4556 transitions. [2022-11-20 10:52:15,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 4.325581395348837) internal successors, (186), 44 states have internal predecessors, (186), 25 states have call successors, (32), 9 states have call predecessors, (32), 12 states have return successors, (31), 14 states have call predecessors, (31), 17 states have call successors, (31) [2022-11-20 10:52:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4556 transitions. [2022-11-20 10:52:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-20 10:52:15,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:15,914 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 26, 26, 26, 26, 26, 26, 25, 25, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:15,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:16,114 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:16,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1991796173, now seen corresponding path program 18 times [2022-11-20 10:52:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965254162] [2022-11-20 10:52:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:16,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:16,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306520610] [2022-11-20 10:52:16,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:52:16,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:16,133 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-20 10:52:16,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-20 10:52:16,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 10:52:16,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5523 backedges. 1568 proven. 129 refuted. 0 times theorem prover too weak. 3826 trivial. 0 not checked. [2022-11-20 10:52:17,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5523 backedges. 1568 proven. 174 refuted. 0 times theorem prover too weak. 3781 trivial. 0 not checked. [2022-11-20 10:52:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965254162] [2022-11-20 10:52:19,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306520610] [2022-11-20 10:52:19,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306520610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:19,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:19,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 36 [2022-11-20 10:52:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690561377] [2022-11-20 10:52:19,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 10:52:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 10:52:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:52:19,766 INFO L87 Difference]: Start difference. First operand 3368 states and 4556 transitions. Second operand has 36 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 19 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 14 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-20 10:52:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:23,338 INFO L93 Difference]: Finished difference Result 8102 states and 11586 transitions. [2022-11-20 10:52:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 10:52:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 19 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 14 states have call predecessors, (24), 16 states have call successors, (24) Word has length 441 [2022-11-20 10:52:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:23,351 INFO L225 Difference]: With dead ends: 8102 [2022-11-20 10:52:23,351 INFO L226 Difference]: Without dead ends: 5123 [2022-11-20 10:52:23,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 834 SyntacticMatches, 15 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=604, Invalid=3302, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 10:52:23,359 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 209 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:23,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1193 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:52:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2022-11-20 10:52:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 4772. [2022-11-20 10:52:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 3752 states have (on average 1.097547974413646) internal successors, (4118), 3746 states have internal predecessors, (4118), 732 states have call successors, (732), 241 states have call predecessors, (732), 283 states have return successors, (1764), 784 states have call predecessors, (1764), 727 states have call successors, (1764) [2022-11-20 10:52:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 6614 transitions. [2022-11-20 10:52:23,990 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 6614 transitions. Word has length 441 [2022-11-20 10:52:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 4772 states and 6614 transitions. [2022-11-20 10:52:23,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 19 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (24), 14 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-20 10:52:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 6614 transitions. [2022-11-20 10:52:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-20 10:52:23,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:23,995 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:24,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:24,195 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash 727114295, now seen corresponding path program 7 times [2022-11-20 10:52:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:24,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723996964] [2022-11-20 10:52:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:24,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412582399] [2022-11-20 10:52:24,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:52:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:24,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:24,211 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:24,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-20 10:52:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:24,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:52:24,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 433 proven. 116 refuted. 0 times theorem prover too weak. 6836 trivial. 0 not checked. [2022-11-20 10:52:24,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:25,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723996964] [2022-11-20 10:52:25,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:25,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412582399] [2022-11-20 10:52:25,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412582399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:25,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:52:25,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-11-20 10:52:25,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147059803] [2022-11-20 10:52:25,377 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:25,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:52:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:52:25,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:52:25,378 INFO L87 Difference]: Start difference. First operand 4772 states and 6614 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 10:52:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:26,909 INFO L93 Difference]: Finished difference Result 5116 states and 7122 transitions. [2022-11-20 10:52:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:52:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 533 [2022-11-20 10:52:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:26,925 INFO L225 Difference]: With dead ends: 5116 [2022-11-20 10:52:26,926 INFO L226 Difference]: Without dead ends: 5113 [2022-11-20 10:52:26,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:52:26,930 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 50 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:26,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 485 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:52:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5113 states. [2022-11-20 10:52:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5113 to 5101. [2022-11-20 10:52:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 4008 states have (on average 1.0970558882235528) internal successors, (4397), 4001 states have internal predecessors, (4397), 791 states have call successors, (791), 256 states have call predecessors, (791), 297 states have return successors, (1894), 843 states have call predecessors, (1894), 786 states have call successors, (1894) [2022-11-20 10:52:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 7082 transitions. [2022-11-20 10:52:27,589 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 7082 transitions. Word has length 533 [2022-11-20 10:52:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:27,589 INFO L495 AbstractCegarLoop]: Abstraction has 5101 states and 7082 transitions. [2022-11-20 10:52:27,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 10:52:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 7082 transitions. [2022-11-20 10:52:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-20 10:52:27,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:27,594 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 24, 21, 21, 21, 21, 21, 21, 21, 21, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:27,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-11-20 10:52:27,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:27,794 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1979169754, now seen corresponding path program 8 times [2022-11-20 10:52:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:27,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124419626] [2022-11-20 10:52:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:27,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48562202] [2022-11-20 10:52:27,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:52:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:27,809 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:27,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-11-20 10:52:28,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:52:28,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:28,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:52:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5769 backedges. 2062 proven. 2 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-20 10:52:28,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5769 backedges. 573 proven. 86 refuted. 0 times theorem prover too weak. 5110 trivial. 0 not checked. [2022-11-20 10:52:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:29,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124419626] [2022-11-20 10:52:29,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:29,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48562202] [2022-11-20 10:52:29,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48562202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:29,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:29,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-11-20 10:52:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328892252] [2022-11-20 10:52:29,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:29,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:52:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:52:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:52:29,370 INFO L87 Difference]: Start difference. First operand 5101 states and 7082 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-20 10:52:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:30,554 INFO L93 Difference]: Finished difference Result 9184 states and 13007 transitions. [2022-11-20 10:52:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:52:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) Word has length 488 [2022-11-20 10:52:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:30,571 INFO L225 Difference]: With dead ends: 9184 [2022-11-20 10:52:30,571 INFO L226 Difference]: Without dead ends: 5134 [2022-11-20 10:52:30,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 952 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:30,584 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 60 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:30,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 364 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:52:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2022-11-20 10:52:31,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 5055. [2022-11-20 10:52:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 3972 states have (on average 1.0979355488418931) internal successors, (4361), 3966 states have internal predecessors, (4361), 782 states have call successors, (782), 255 states have call predecessors, (782), 296 states have return successors, (1874), 833 states have call predecessors, (1874), 777 states have call successors, (1874) [2022-11-20 10:52:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 7017 transitions. [2022-11-20 10:52:31,257 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 7017 transitions. Word has length 488 [2022-11-20 10:52:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:31,257 INFO L495 AbstractCegarLoop]: Abstraction has 5055 states and 7017 transitions. [2022-11-20 10:52:31,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-20 10:52:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 7017 transitions. [2022-11-20 10:52:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-20 10:52:31,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:31,262 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:31,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:31,462 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:31,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1740228454, now seen corresponding path program 9 times [2022-11-20 10:52:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:31,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432418896] [2022-11-20 10:52:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:31,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:31,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723121569] [2022-11-20 10:52:31,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:52:31,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:31,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:31,486 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:31,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-20 10:52:31,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 10:52:31,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:31,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:52:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6391 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 5996 trivial. 0 not checked. [2022-11-20 10:52:31,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:34,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:34,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432418896] [2022-11-20 10:52:34,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:34,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723121569] [2022-11-20 10:52:34,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723121569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:34,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:52:34,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-20 10:52:34,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316344529] [2022-11-20 10:52:34,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:34,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:52:34,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:52:34,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2022-11-20 10:52:34,687 INFO L87 Difference]: Start difference. First operand 5055 states and 7017 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:52:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:35,658 INFO L93 Difference]: Finished difference Result 5163 states and 7134 transitions. [2022-11-20 10:52:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:52:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 508 [2022-11-20 10:52:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:35,678 INFO L225 Difference]: With dead ends: 5163 [2022-11-20 10:52:35,678 INFO L226 Difference]: Without dead ends: 5160 [2022-11-20 10:52:35,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2022-11-20 10:52:35,682 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 38 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:35,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 196 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2022-11-20 10:52:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 5053. [2022-11-20 10:52:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5053 states, 3970 states have (on average 1.091183879093199) internal successors, (4332), 3965 states have internal predecessors, (4332), 782 states have call successors, (782), 255 states have call predecessors, (782), 296 states have return successors, (1873), 832 states have call predecessors, (1873), 777 states have call successors, (1873) [2022-11-20 10:52:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5053 states to 5053 states and 6987 transitions. [2022-11-20 10:52:36,329 INFO L78 Accepts]: Start accepts. Automaton has 5053 states and 6987 transitions. Word has length 508 [2022-11-20 10:52:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:36,330 INFO L495 AbstractCegarLoop]: Abstraction has 5053 states and 6987 transitions. [2022-11-20 10:52:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:52:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5053 states and 6987 transitions. [2022-11-20 10:52:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2022-11-20 10:52:36,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:36,335 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 35, 35, 35, 35, 35, 35, 35, 35, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:36,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-11-20 10:52:36,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:36,536 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1880366728, now seen corresponding path program 3 times [2022-11-20 10:52:36,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:36,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064703973] [2022-11-20 10:52:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:36,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:36,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837505509] [2022-11-20 10:52:36,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:52:36,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:36,557 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:36,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-20 10:52:36,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 10:52:36,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:36,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:52:36,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10174 backedges. 1593 proven. 55 refuted. 0 times theorem prover too weak. 8526 trivial. 0 not checked. [2022-11-20 10:52:37,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10174 backedges. 1593 proven. 83 refuted. 0 times theorem prover too weak. 8498 trivial. 0 not checked. [2022-11-20 10:52:39,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064703973] [2022-11-20 10:52:39,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:39,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837505509] [2022-11-20 10:52:39,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837505509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:39,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:39,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 22 [2022-11-20 10:52:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10722869] [2022-11-20 10:52:39,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:52:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:52:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:52:39,785 INFO L87 Difference]: Start difference. First operand 5053 states and 6987 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 23 states have internal predecessors, (111), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-20 10:52:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:41,824 INFO L93 Difference]: Finished difference Result 7398 states and 11098 transitions. [2022-11-20 10:52:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:52:41,824 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 23 states have internal predecessors, (111), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) Word has length 592 [2022-11-20 10:52:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:41,845 INFO L225 Difference]: With dead ends: 7398 [2022-11-20 10:52:41,845 INFO L226 Difference]: Without dead ends: 7397 [2022-11-20 10:52:41,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1158 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:52:41,849 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 134 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:41,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 295 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:52:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-11-20 10:52:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 5402. [2022-11-20 10:52:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 4246 states have (on average 1.0909090909090908) internal successors, (4632), 4239 states have internal predecessors, (4632), 824 states have call successors, (824), 257 states have call predecessors, (824), 327 states have return successors, (2110), 905 states have call predecessors, (2110), 819 states have call successors, (2110) [2022-11-20 10:52:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7566 transitions. [2022-11-20 10:52:42,497 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7566 transitions. Word has length 592 [2022-11-20 10:52:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:42,498 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7566 transitions. [2022-11-20 10:52:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 23 states have internal predecessors, (111), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-20 10:52:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7566 transitions. [2022-11-20 10:52:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2022-11-20 10:52:42,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:42,503 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 40, 40, 40, 40, 40, 40, 40, 40, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:42,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-11-20 10:52:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-11-20 10:52:42,703 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1976140648, now seen corresponding path program 4 times [2022-11-20 10:52:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:42,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981639961] [2022-11-20 10:52:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:42,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:42,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187328472] [2022-11-20 10:52:42,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:52:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:42,719 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:42,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-11-20 10:52:43,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:52:43,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:43,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:52:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12444 backedges. 7453 proven. 315 refuted. 0 times theorem prover too weak. 4676 trivial. 0 not checked. [2022-11-20 10:52:43,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12444 backedges. 1237 proven. 2015 refuted. 0 times theorem prover too weak. 9192 trivial. 0 not checked. [2022-11-20 10:52:46,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:46,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981639961] [2022-11-20 10:52:46,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:46,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187328472] [2022-11-20 10:52:46,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187328472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:46,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:46,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 29 [2022-11-20 10:52:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970173618] [2022-11-20 10:52:46,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:46,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 10:52:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 10:52:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:52:46,832 INFO L87 Difference]: Start difference. First operand 5402 states and 7566 transitions. Second operand has 29 states, 25 states have (on average 6.32) internal successors, (158), 29 states have internal predecessors, (158), 19 states have call successors, (31), 2 states have call predecessors, (31), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-20 10:52:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:49,227 INFO L93 Difference]: Finished difference Result 10594 states and 15088 transitions. [2022-11-20 10:52:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:52:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.32) internal successors, (158), 29 states have internal predecessors, (158), 19 states have call successors, (31), 2 states have call predecessors, (31), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 642 [2022-11-20 10:52:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:49,246 INFO L225 Difference]: With dead ends: 10594 [2022-11-20 10:52:49,246 INFO L226 Difference]: Without dead ends: 5527 [2022-11-20 10:52:49,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1248 SyntacticMatches, 12 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:52:49,260 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 237 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:49,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 821 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:52:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2022-11-20 10:52:49,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5402. [2022-11-20 10:52:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 4246 states have (on average 1.0909090909090908) internal successors, (4632), 4239 states have internal predecessors, (4632), 824 states have call successors, (824), 257 states have call predecessors, (824), 327 states have return successors, (2093), 905 states have call predecessors, (2093), 819 states have call successors, (2093) [2022-11-20 10:52:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 7549 transitions. [2022-11-20 10:52:49,972 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 7549 transitions. Word has length 642 [2022-11-20 10:52:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:49,972 INFO L495 AbstractCegarLoop]: Abstraction has 5402 states and 7549 transitions. [2022-11-20 10:52:49,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.32) internal successors, (158), 29 states have internal predecessors, (158), 19 states have call successors, (31), 2 states have call predecessors, (31), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-20 10:52:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 7549 transitions. [2022-11-20 10:52:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-20 10:52:49,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:49,979 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 38, 38, 38, 38, 38, 38, 38, 38, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:49,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-11-20 10:52:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:50,179 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 294098856, now seen corresponding path program 5 times [2022-11-20 10:52:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:50,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145750736] [2022-11-20 10:52:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:50,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:50,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034558484] [2022-11-20 10:52:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:52:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:50,203 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:50,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-20 10:52:50,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-11-20 10:52:50,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 10:52:50,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11506 backedges. 6580 proven. 256 refuted. 0 times theorem prover too weak. 4670 trivial. 0 not checked. [2022-11-20 10:52:51,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11506 backedges. 838 proven. 1278 refuted. 0 times theorem prover too weak. 9390 trivial. 0 not checked. [2022-11-20 10:52:53,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145750736] [2022-11-20 10:52:53,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034558484] [2022-11-20 10:52:53,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034558484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:53,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:53,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 29 [2022-11-20 10:52:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593163435] [2022-11-20 10:52:53,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:53,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 10:52:53,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 10:52:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:52:53,503 INFO L87 Difference]: Start difference. First operand 5402 states and 7549 transitions. Second operand has 29 states, 27 states have (on average 5.444444444444445) internal successors, (147), 29 states have internal predecessors, (147), 17 states have call successors, (30), 2 states have call predecessors, (30), 9 states have return successors, (32), 15 states have call predecessors, (32), 17 states have call successors, (32) [2022-11-20 10:52:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:55,922 INFO L93 Difference]: Finished difference Result 10461 states and 14848 transitions. [2022-11-20 10:52:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:52:55,923 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.444444444444445) internal successors, (147), 29 states have internal predecessors, (147), 17 states have call successors, (30), 2 states have call predecessors, (30), 9 states have return successors, (32), 15 states have call predecessors, (32), 17 states have call successors, (32) Word has length 622 [2022-11-20 10:52:55,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:55,940 INFO L225 Difference]: With dead ends: 10461 [2022-11-20 10:52:55,940 INFO L226 Difference]: Without dead ends: 5331 [2022-11-20 10:52:55,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1266 GetRequests, 1206 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=292, Invalid=1870, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 10:52:55,955 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 300 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:55,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 777 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:52:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5331 states. [2022-11-20 10:52:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5331 to 5036. [2022-11-20 10:52:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 3960 states have (on average 1.0929292929292929) internal successors, (4328), 3951 states have internal predecessors, (4328), 773 states have call successors, (773), 248 states have call predecessors, (773), 298 states have return successors, (1921), 836 states have call predecessors, (1921), 768 states have call successors, (1921) [2022-11-20 10:52:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 7022 transitions. [2022-11-20 10:52:56,865 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 7022 transitions. Word has length 622 [2022-11-20 10:52:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:56,865 INFO L495 AbstractCegarLoop]: Abstraction has 5036 states and 7022 transitions. [2022-11-20 10:52:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.444444444444445) internal successors, (147), 29 states have internal predecessors, (147), 17 states have call successors, (30), 2 states have call predecessors, (30), 9 states have return successors, (32), 15 states have call predecessors, (32), 17 states have call successors, (32) [2022-11-20 10:52:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 7022 transitions. [2022-11-20 10:52:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-11-20 10:52:56,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:56,871 INFO L195 NwaCegarLoop]: trace histogram [59, 57, 34, 34, 34, 34, 33, 33, 32, 32, 25, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:56,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-11-20 10:52:57,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:57,072 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:52:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash -634692812, now seen corresponding path program 11 times [2022-11-20 10:52:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:57,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799807215] [2022-11-20 10:52:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:57,102 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:57,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106251962] [2022-11-20 10:52:57,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:52:57,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:57,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:57,103 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:57,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-20 10:52:57,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-11-20 10:52:57,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:57,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:52:57,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10495 backedges. 2366 proven. 236 refuted. 0 times theorem prover too weak. 7893 trivial. 0 not checked. [2022-11-20 10:52:58,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10495 backedges. 2366 proven. 281 refuted. 0 times theorem prover too weak. 7848 trivial. 0 not checked. [2022-11-20 10:53:01,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:01,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799807215] [2022-11-20 10:53:01,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:01,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106251962] [2022-11-20 10:53:01,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106251962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:01,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:01,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28] total 43 [2022-11-20 10:53:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252712372] [2022-11-20 10:53:01,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 10:53:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:01,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 10:53:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:53:01,342 INFO L87 Difference]: Start difference. First operand 5036 states and 7022 transitions. Second operand has 43 states, 41 states have (on average 4.073170731707317) internal successors, (167), 37 states have internal predecessors, (167), 22 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (25), 14 states have call predecessors, (25), 16 states have call successors, (25) [2022-11-20 10:53:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:07,950 INFO L93 Difference]: Finished difference Result 13338 states and 19698 transitions. [2022-11-20 10:53:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-20 10:53:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.073170731707317) internal successors, (167), 37 states have internal predecessors, (167), 22 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (25), 14 states have call predecessors, (25), 16 states have call successors, (25) Word has length 628 [2022-11-20 10:53:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:07,977 INFO L225 Difference]: With dead ends: 13338 [2022-11-20 10:53:07,977 INFO L226 Difference]: Without dead ends: 9338 [2022-11-20 10:53:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1211 SyntacticMatches, 6 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1353, Invalid=10419, Unknown=0, NotChecked=0, Total=11772 [2022-11-20 10:53:07,989 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 433 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 3052 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:07,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1223 Invalid, 3219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3052 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:53:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2022-11-20 10:53:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 8393. [2022-11-20 10:53:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8393 states, 6754 states have (on average 1.1070476754515843) internal successors, (7477), 6731 states have internal predecessors, (7477), 1242 states have call successors, (1242), 298 states have call predecessors, (1242), 392 states have return successors, (3167), 1363 states have call predecessors, (3167), 1237 states have call successors, (3167) [2022-11-20 10:53:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8393 states to 8393 states and 11886 transitions. [2022-11-20 10:53:09,144 INFO L78 Accepts]: Start accepts. Automaton has 8393 states and 11886 transitions. Word has length 628 [2022-11-20 10:53:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:09,144 INFO L495 AbstractCegarLoop]: Abstraction has 8393 states and 11886 transitions. [2022-11-20 10:53:09,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.073170731707317) internal successors, (167), 37 states have internal predecessors, (167), 22 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (25), 14 states have call predecessors, (25), 16 states have call successors, (25) [2022-11-20 10:53:09,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8393 states and 11886 transitions. [2022-11-20 10:53:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-20 10:53:09,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:09,149 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:09,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-11-20 10:53:09,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-11-20 10:53:09,350 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1571253126, now seen corresponding path program 10 times [2022-11-20 10:53:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902153996] [2022-11-20 10:53:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:09,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:09,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:09,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614599509] [2022-11-20 10:53:09,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:53:09,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:09,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:09,365 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:09,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-11-20 10:53:09,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:53:09,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:09,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:53:09,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 1338 proven. 271 refuted. 0 times theorem prover too weak. 5108 trivial. 0 not checked. [2022-11-20 10:53:09,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 1338 proven. 279 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2022-11-20 10:53:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:11,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902153996] [2022-11-20 10:53:11,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:11,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614599509] [2022-11-20 10:53:11,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614599509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:11,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:11,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 21 [2022-11-20 10:53:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677064194] [2022-11-20 10:53:11,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:11,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:53:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:53:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:53:11,332 INFO L87 Difference]: Start difference. First operand 8393 states and 11886 transitions. Second operand has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) [2022-11-20 10:53:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:13,938 INFO L93 Difference]: Finished difference Result 17337 states and 25627 transitions. [2022-11-20 10:53:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:53:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) Word has length 518 [2022-11-20 10:53:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:13,974 INFO L225 Difference]: With dead ends: 17337 [2022-11-20 10:53:13,975 INFO L226 Difference]: Without dead ends: 10007 [2022-11-20 10:53:14,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1007 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:53:14,003 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 187 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:14,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 391 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:53:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10007 states. [2022-11-20 10:53:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10007 to 8426. [2022-11-20 10:53:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 6780 states have (on average 1.1067846607669616) internal successors, (7504), 6755 states have internal predecessors, (7504), 1249 states have call successors, (1249), 300 states have call predecessors, (1249), 392 states have return successors, (3141), 1370 states have call predecessors, (3141), 1244 states have call successors, (3141) [2022-11-20 10:53:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 11894 transitions. [2022-11-20 10:53:15,253 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 11894 transitions. Word has length 518 [2022-11-20 10:53:15,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:15,254 INFO L495 AbstractCegarLoop]: Abstraction has 8426 states and 11894 transitions. [2022-11-20 10:53:15,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (23), 11 states have call predecessors, (23), 13 states have call successors, (23) [2022-11-20 10:53:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 11894 transitions. [2022-11-20 10:53:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-20 10:53:15,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:15,261 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:15,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:15,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:15,467 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1789045146, now seen corresponding path program 11 times [2022-11-20 10:53:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378682602] [2022-11-20 10:53:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:15,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:15,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428265277] [2022-11-20 10:53:15,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:53:15,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:15,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:15,493 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:15,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-20 10:53:15,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-11-20 10:53:15,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:15,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:53:15,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6391 backedges. 830 proven. 133 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2022-11-20 10:53:16,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6391 backedges. 830 proven. 135 refuted. 0 times theorem prover too weak. 5426 trivial. 0 not checked. [2022-11-20 10:53:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378682602] [2022-11-20 10:53:17,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428265277] [2022-11-20 10:53:17,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428265277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:17,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:17,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2022-11-20 10:53:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898703754] [2022-11-20 10:53:17,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:53:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:53:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:53:17,075 INFO L87 Difference]: Start difference. First operand 8426 states and 11894 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 10:53:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:18,989 INFO L93 Difference]: Finished difference Result 15962 states and 22767 transitions. [2022-11-20 10:53:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:53:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 508 [2022-11-20 10:53:18,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:19,027 INFO L225 Difference]: With dead ends: 15962 [2022-11-20 10:53:19,028 INFO L226 Difference]: Without dead ends: 8624 [2022-11-20 10:53:19,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 991 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:53:19,059 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 61 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:19,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 439 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:53:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2022-11-20 10:53:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8426. [2022-11-20 10:53:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 6776 states have (on average 1.1061097992916176) internal successors, (7495), 6756 states have internal predecessors, (7495), 1253 states have call successors, (1253), 300 states have call predecessors, (1253), 392 states have return successors, (3124), 1369 states have call predecessors, (3124), 1247 states have call successors, (3124) [2022-11-20 10:53:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 11872 transitions. [2022-11-20 10:53:20,304 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 11872 transitions. Word has length 508 [2022-11-20 10:53:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:20,304 INFO L495 AbstractCegarLoop]: Abstraction has 8426 states and 11872 transitions. [2022-11-20 10:53:20,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 10:53:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 11872 transitions. [2022-11-20 10:53:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-20 10:53:20,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:20,311 INFO L195 NwaCegarLoop]: trace histogram [66, 65, 37, 37, 37, 37, 37, 37, 36, 36, 29, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:20,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-11-20 10:53:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:20,511 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash -174707456, now seen corresponding path program 12 times [2022-11-20 10:53:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803733674] [2022-11-20 10:53:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:20,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840300151] [2022-11-20 10:53:20,535 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:53:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:20,543 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:20,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-11-20 10:53:20,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 10:53:20,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:53:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13247 backedges. 3248 proven. 1 refuted. 0 times theorem prover too weak. 9998 trivial. 0 not checked. [2022-11-20 10:53:20,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13247 backedges. 556 proven. 54 refuted. 0 times theorem prover too weak. 12637 trivial. 0 not checked. [2022-11-20 10:53:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803733674] [2022-11-20 10:53:21,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840300151] [2022-11-20 10:53:21,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840300151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:21,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:21,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-11-20 10:53:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227214009] [2022-11-20 10:53:21,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:21,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:53:21,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:53:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:53:21,571 INFO L87 Difference]: Start difference. First operand 8426 states and 11872 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 10:53:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:23,501 INFO L93 Difference]: Finished difference Result 8583 states and 12047 transitions. [2022-11-20 10:53:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:53:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 703 [2022-11-20 10:53:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:23,523 INFO L225 Difference]: With dead ends: 8583 [2022-11-20 10:53:23,523 INFO L226 Difference]: Without dead ends: 8400 [2022-11-20 10:53:23,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1390 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:53:23,529 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 60 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:23,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 322 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:53:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8400 states. [2022-11-20 10:53:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8400 to 8396. [2022-11-20 10:53:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8396 states, 6758 states have (on average 1.1049126960639242) internal successors, (7467), 6736 states have internal predecessors, (7467), 1244 states have call successors, (1244), 298 states have call predecessors, (1244), 389 states have return successors, (3092), 1361 states have call predecessors, (3092), 1239 states have call successors, (3092) [2022-11-20 10:53:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 11803 transitions. [2022-11-20 10:53:24,705 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 11803 transitions. Word has length 703 [2022-11-20 10:53:24,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:24,706 INFO L495 AbstractCegarLoop]: Abstraction has 8396 states and 11803 transitions. [2022-11-20 10:53:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 10:53:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 11803 transitions. [2022-11-20 10:53:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-11-20 10:53:24,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:24,714 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 27, 27, 27, 27, 27, 27, 26, 26, 23, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:24,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:24,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-11-20 10:53:24,920 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1242761216, now seen corresponding path program 13 times [2022-11-20 10:53:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:24,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670984053] [2022-11-20 10:53:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:24,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:24,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121429119] [2022-11-20 10:53:24,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:53:24,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:24,949 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:24,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-11-20 10:53:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:25,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:53:25,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7389 backedges. 552 proven. 56 refuted. 0 times theorem prover too weak. 6781 trivial. 0 not checked. [2022-11-20 10:53:25,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7389 backedges. 552 proven. 56 refuted. 0 times theorem prover too weak. 6781 trivial. 0 not checked. [2022-11-20 10:53:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670984053] [2022-11-20 10:53:26,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121429119] [2022-11-20 10:53:26,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121429119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:26,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-11-20 10:53:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209214808] [2022-11-20 10:53:26,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:26,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:53:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:53:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:53:26,024 INFO L87 Difference]: Start difference. First operand 8396 states and 11803 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-20 10:53:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:27,695 INFO L93 Difference]: Finished difference Result 15647 states and 22253 transitions. [2022-11-20 10:53:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:53:27,696 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 535 [2022-11-20 10:53:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:27,731 INFO L225 Difference]: With dead ends: 15647 [2022-11-20 10:53:27,731 INFO L226 Difference]: Without dead ends: 8315 [2022-11-20 10:53:27,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1052 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:53:27,759 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 67 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:27,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 278 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:53:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2022-11-20 10:53:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 8307. [2022-11-20 10:53:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 6688 states have (on average 1.1055622009569377) internal successors, (7394), 6668 states have internal predecessors, (7394), 1232 states have call successors, (1232), 296 states have call predecessors, (1232), 382 states have return successors, (3038), 1342 states have call predecessors, (3038), 1227 states have call successors, (3038) [2022-11-20 10:53:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 11664 transitions. [2022-11-20 10:53:29,051 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 11664 transitions. Word has length 535 [2022-11-20 10:53:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:29,051 INFO L495 AbstractCegarLoop]: Abstraction has 8307 states and 11664 transitions. [2022-11-20 10:53:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-20 10:53:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 11664 transitions. [2022-11-20 10:53:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-11-20 10:53:29,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:29,059 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 25, 25, 24, 24, 24, 24, 24, 24, 24, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:29,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:29,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-11-20 10:53:29,267 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:29,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:29,267 INFO L85 PathProgramCache]: Analyzing trace with hash -292548845, now seen corresponding path program 5 times [2022-11-20 10:53:29,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:29,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552897287] [2022-11-20 10:53:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:29,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:29,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:29,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301439319] [2022-11-20 10:53:29,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:53:29,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:29,295 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-11-20 10:53:29,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-11-20 10:53:29,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:29,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:53:29,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 1595 proven. 193 refuted. 0 times theorem prover too weak. 5356 trivial. 0 not checked. [2022-11-20 10:53:30,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 787 proven. 245 refuted. 0 times theorem prover too weak. 6112 trivial. 0 not checked. [2022-11-20 10:53:31,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:31,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552897287] [2022-11-20 10:53:31,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:31,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301439319] [2022-11-20 10:53:31,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301439319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:31,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:31,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2022-11-20 10:53:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518533453] [2022-11-20 10:53:31,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:31,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:53:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:31,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:53:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-20 10:53:31,346 INFO L87 Difference]: Start difference. First operand 8307 states and 11664 transitions. Second operand has 26 states, 24 states have (on average 5.041666666666667) internal successors, (121), 26 states have internal predecessors, (121), 13 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (22), 12 states have call predecessors, (22), 13 states have call successors, (22) [2022-11-20 10:53:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:34,706 INFO L93 Difference]: Finished difference Result 16600 states and 24434 transitions. [2022-11-20 10:53:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:53:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.041666666666667) internal successors, (121), 26 states have internal predecessors, (121), 13 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (22), 12 states have call predecessors, (22), 13 states have call successors, (22) Word has length 541 [2022-11-20 10:53:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:34,746 INFO L225 Difference]: With dead ends: 16600 [2022-11-20 10:53:34,746 INFO L226 Difference]: Without dead ends: 10569 [2022-11-20 10:53:34,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 1057 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=269, Invalid=1711, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 10:53:34,771 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 126 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:34,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 540 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:53:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10569 states. [2022-11-20 10:53:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10569 to 9542. [2022-11-20 10:53:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 7876 states have (on average 1.0810055865921788) internal successors, (8514), 7752 states have internal predecessors, (8514), 1271 states have call successors, (1271), 278 states have call predecessors, (1271), 390 states have return successors, (3838), 1511 states have call predecessors, (3838), 1268 states have call successors, (3838) [2022-11-20 10:53:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 13623 transitions. [2022-11-20 10:53:36,265 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 13623 transitions. Word has length 541 [2022-11-20 10:53:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:36,265 INFO L495 AbstractCegarLoop]: Abstraction has 9542 states and 13623 transitions. [2022-11-20 10:53:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.041666666666667) internal successors, (121), 26 states have internal predecessors, (121), 13 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (22), 12 states have call predecessors, (22), 13 states have call successors, (22) [2022-11-20 10:53:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 13623 transitions. [2022-11-20 10:53:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2022-11-20 10:53:36,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:36,270 INFO L195 NwaCegarLoop]: trace histogram [54, 51, 30, 30, 30, 30, 28, 28, 27, 27, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:36,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-11-20 10:53:36,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:36,470 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1853403107, now seen corresponding path program 14 times [2022-11-20 10:53:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:36,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866097619] [2022-11-20 10:53:36,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:36,490 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:36,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587866782] [2022-11-20 10:53:36,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:53:36,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:36,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:36,499 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:36,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-20 10:53:36,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:53:36,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:36,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:53:36,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8359 backedges. 2600 proven. 121 refuted. 0 times theorem prover too weak. 5638 trivial. 0 not checked. [2022-11-20 10:53:37,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8359 backedges. 578 proven. 217 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-11-20 10:53:38,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866097619] [2022-11-20 10:53:38,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587866782] [2022-11-20 10:53:38,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587866782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:38,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:38,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 21 [2022-11-20 10:53:38,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350769030] [2022-11-20 10:53:38,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:38,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:53:38,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:53:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-20 10:53:38,043 INFO L87 Difference]: Start difference. First operand 9542 states and 13623 transitions. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 17 states have internal predecessors, (94), 11 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:53:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:41,056 INFO L93 Difference]: Finished difference Result 9624 states and 13709 transitions. [2022-11-20 10:53:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:53:41,057 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 17 states have internal predecessors, (94), 11 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 563 [2022-11-20 10:53:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:41,081 INFO L225 Difference]: With dead ends: 9624 [2022-11-20 10:53:41,081 INFO L226 Difference]: Without dead ends: 9553 [2022-11-20 10:53:41,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1097 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=1246, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:53:41,084 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 172 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:41,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 639 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:53:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9553 states. [2022-11-20 10:53:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9553 to 9541. [2022-11-20 10:53:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9541 states, 7875 states have (on average 1.0811428571428572) internal successors, (8514), 7750 states have internal predecessors, (8514), 1269 states have call successors, (1269), 280 states have call predecessors, (1269), 392 states have return successors, (3834), 1510 states have call predecessors, (3834), 1267 states have call successors, (3834) [2022-11-20 10:53:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9541 states to 9541 states and 13617 transitions. [2022-11-20 10:53:42,458 INFO L78 Accepts]: Start accepts. Automaton has 9541 states and 13617 transitions. Word has length 563 [2022-11-20 10:53:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:42,459 INFO L495 AbstractCegarLoop]: Abstraction has 9541 states and 13617 transitions. [2022-11-20 10:53:42,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 17 states have internal predecessors, (94), 11 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:53:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 9541 states and 13617 transitions. [2022-11-20 10:53:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2022-11-20 10:53:42,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:42,467 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 40, 40, 40, 40, 40, 40, 40, 40, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:42,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-11-20 10:53:42,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:42,674 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash -28661272, now seen corresponding path program 6 times [2022-11-20 10:53:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:42,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109205049] [2022-11-20 10:53:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:42,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351646438] [2022-11-20 10:53:42,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:53:42,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:42,694 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:42,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-20 10:53:43,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-20 10:53:43,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:43,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 10:53:43,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12444 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 12315 trivial. 0 not checked. [2022-11-20 10:53:43,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12444 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 12315 trivial. 0 not checked. [2022-11-20 10:53:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109205049] [2022-11-20 10:53:44,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:44,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351646438] [2022-11-20 10:53:44,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351646438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:44,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:44,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-20 10:53:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085443462] [2022-11-20 10:53:44,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 10:53:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 10:53:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2022-11-20 10:53:44,526 INFO L87 Difference]: Start difference. First operand 9541 states and 13617 transitions. Second operand has 30 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 30 states have internal predecessors, (108), 15 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 10:53:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:48,484 INFO L93 Difference]: Finished difference Result 20469 states and 29824 transitions. [2022-11-20 10:53:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:53:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 30 states have internal predecessors, (108), 15 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 642 [2022-11-20 10:53:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:48,549 INFO L225 Difference]: With dead ends: 20469 [2022-11-20 10:53:48,549 INFO L226 Difference]: Without dead ends: 20468 [2022-11-20 10:53:48,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:53:48,558 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 250 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:48,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 541 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:53:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2022-11-20 10:53:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 9637. [2022-11-20 10:53:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 7971 states have (on average 1.0833019696399449) internal successors, (8635), 7833 states have internal predecessors, (8635), 1274 states have call successors, (1274), 279 states have call predecessors, (1274), 387 states have return successors, (3879), 1524 states have call predecessors, (3879), 1272 states have call successors, (3879) [2022-11-20 10:53:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13788 transitions. [2022-11-20 10:53:50,562 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13788 transitions. Word has length 642 [2022-11-20 10:53:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:50,562 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13788 transitions. [2022-11-20 10:53:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 30 states have internal predecessors, (108), 15 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 10:53:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13788 transitions. [2022-11-20 10:53:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2022-11-20 10:53:50,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:50,570 INFO L195 NwaCegarLoop]: trace histogram [74, 73, 42, 42, 42, 42, 42, 42, 41, 41, 32, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:50,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-11-20 10:53:50,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:50,770 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1807587834, now seen corresponding path program 15 times [2022-11-20 10:53:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:50,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858169745] [2022-11-20 10:53:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:50,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:50,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007854575] [2022-11-20 10:53:50,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:53:50,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:50,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:50,791 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:50,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-11-20 10:53:51,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 10:53:51,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:51,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:53:51,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16817 backedges. 4171 proven. 4 refuted. 0 times theorem prover too weak. 12642 trivial. 0 not checked. [2022-11-20 10:53:51,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:53:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16817 backedges. 1075 proven. 115 refuted. 0 times theorem prover too weak. 15627 trivial. 0 not checked. [2022-11-20 10:53:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:52,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858169745] [2022-11-20 10:53:52,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:53:52,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007854575] [2022-11-20 10:53:52,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007854575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:53:52,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:53:52,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 15 [2022-11-20 10:53:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74327660] [2022-11-20 10:53:52,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:53:52,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:53:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:53:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:53:52,299 INFO L87 Difference]: Start difference. First operand 9637 states and 13788 transitions. Second operand has 15 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 10:53:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:54,402 INFO L93 Difference]: Finished difference Result 17493 states and 25653 transitions. [2022-11-20 10:53:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:53:54,402 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) Word has length 787 [2022-11-20 10:53:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:54,431 INFO L225 Difference]: With dead ends: 17493 [2022-11-20 10:53:54,431 INFO L226 Difference]: Without dead ends: 9594 [2022-11-20 10:53:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1551 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:53:54,457 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 103 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:54,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 454 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:53:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9594 states. [2022-11-20 10:53:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9594 to 9593. [2022-11-20 10:53:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9593 states, 7938 states have (on average 1.0833963214915596) internal successors, (8600), 7800 states have internal predecessors, (8600), 1265 states have call successors, (1265), 279 states have call predecessors, (1265), 385 states have return successors, (3707), 1513 states have call predecessors, (3707), 1263 states have call successors, (3707) [2022-11-20 10:53:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13572 transitions. [2022-11-20 10:53:55,952 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13572 transitions. Word has length 787 [2022-11-20 10:53:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:55,953 INFO L495 AbstractCegarLoop]: Abstraction has 9593 states and 13572 transitions. [2022-11-20 10:53:55,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-20 10:53:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13572 transitions. [2022-11-20 10:53:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-11-20 10:53:55,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:55,958 INFO L195 NwaCegarLoop]: trace histogram [59, 56, 33, 33, 33, 33, 31, 31, 30, 30, 26, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:53:55,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-11-20 10:53:56,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:56,159 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:53:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1559846790, now seen corresponding path program 16 times [2022-11-20 10:53:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939363239] [2022-11-20 10:53:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:56,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:53:56,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006931593] [2022-11-20 10:53:56,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:53:56,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:56,179 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-11-20 10:53:56,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:53:56,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:53:56,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 10:53:56,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10115 backedges. 2916 proven. 528 refuted. 0 times theorem prover too weak. 6671 trivial. 0 not checked. [2022-11-20 10:53:57,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10115 backedges. 2916 proven. 579 refuted. 0 times theorem prover too weak. 6620 trivial. 0 not checked. [2022-11-20 10:54:00,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939363239] [2022-11-20 10:54:00,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:54:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006931593] [2022-11-20 10:54:00,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006931593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:00,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:00,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 32] total 43 [2022-11-20 10:54:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042715501] [2022-11-20 10:54:00,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 10:54:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 10:54:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:54:00,572 INFO L87 Difference]: Start difference. First operand 9593 states and 13572 transitions. Second operand has 43 states, 39 states have (on average 4.615384615384615) internal successors, (180), 38 states have internal predecessors, (180), 27 states have call successors, (36), 9 states have call predecessors, (36), 12 states have return successors, (35), 16 states have call predecessors, (35), 21 states have call successors, (35) [2022-11-20 10:54:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:11,219 INFO L93 Difference]: Finished difference Result 27572 states and 41822 transitions. [2022-11-20 10:54:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-20 10:54:11,220 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 4.615384615384615) internal successors, (180), 38 states have internal predecessors, (180), 27 states have call successors, (36), 9 states have call predecessors, (36), 12 states have return successors, (35), 16 states have call predecessors, (35), 21 states have call successors, (35) Word has length 619 [2022-11-20 10:54:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:11,281 INFO L225 Difference]: With dead ends: 27572 [2022-11-20 10:54:11,282 INFO L226 Difference]: Without dead ends: 19295 [2022-11-20 10:54:11,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1203 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1081, Invalid=6929, Unknown=0, NotChecked=0, Total=8010 [2022-11-20 10:54:11,317 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 683 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 5700 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 6397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 5700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:11,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 969 Invalid, 6397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 5700 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 10:54:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19295 states. [2022-11-20 10:54:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19295 to 14263. [2022-11-20 10:54:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 11736 states have (on average 1.0856339468302658) internal successors, (12741), 11549 states have internal predecessors, (12741), 1930 states have call successors, (1930), 373 states have call predecessors, (1930), 592 states have return successors, (6704), 2340 states have call predecessors, (6704), 1929 states have call successors, (6704) [2022-11-20 10:54:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 21375 transitions. [2022-11-20 10:54:13,520 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 21375 transitions. Word has length 619 [2022-11-20 10:54:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:13,521 INFO L495 AbstractCegarLoop]: Abstraction has 14263 states and 21375 transitions. [2022-11-20 10:54:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 4.615384615384615) internal successors, (180), 38 states have internal predecessors, (180), 27 states have call successors, (36), 9 states have call predecessors, (36), 12 states have return successors, (35), 16 states have call predecessors, (35), 21 states have call successors, (35) [2022-11-20 10:54:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 21375 transitions. [2022-11-20 10:54:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-11-20 10:54:13,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:13,527 INFO L195 NwaCegarLoop]: trace histogram [68, 67, 46, 46, 46, 46, 46, 46, 45, 45, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:13,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-11-20 10:54:13,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2022-11-20 10:54:13,728 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:54:13,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:13,728 INFO L85 PathProgramCache]: Analyzing trace with hash 904249217, now seen corresponding path program 19 times [2022-11-20 10:54:13,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:13,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989281375] [2022-11-20 10:54:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:13,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:13,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:54:13,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884606434] [2022-11-20 10:54:13,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:54:13,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:13,750 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:13,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-11-20 10:54:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:14,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 10:54:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15627 backedges. 8277 proven. 224 refuted. 0 times theorem prover too weak. 7126 trivial. 0 not checked. [2022-11-20 10:54:14,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15627 backedges. 1564 proven. 1021 refuted. 0 times theorem prover too weak. 13042 trivial. 0 not checked. [2022-11-20 10:54:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989281375] [2022-11-20 10:54:17,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:54:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884606434] [2022-11-20 10:54:17,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884606434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:17,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:17,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 27 [2022-11-20 10:54:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270945627] [2022-11-20 10:54:17,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:17,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:54:17,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:54:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:54:17,150 INFO L87 Difference]: Start difference. First operand 14263 states and 21375 transitions. Second operand has 27 states, 25 states have (on average 5.44) internal successors, (136), 27 states have internal predecessors, (136), 16 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (29), 12 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 10:54:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:20,570 INFO L93 Difference]: Finished difference Result 28340 states and 43459 transitions. [2022-11-20 10:54:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:54:20,570 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.44) internal successors, (136), 27 states have internal predecessors, (136), 16 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (29), 12 states have call predecessors, (29), 16 states have call successors, (29) Word has length 709 [2022-11-20 10:54:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:20,650 INFO L225 Difference]: With dead ends: 28340 [2022-11-20 10:54:20,650 INFO L226 Difference]: Without dead ends: 13554 [2022-11-20 10:54:20,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1429 GetRequests, 1375 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:54:20,718 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 169 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:20,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 442 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:54:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13554 states. [2022-11-20 10:54:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13554 to 12288. [2022-11-20 10:54:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12288 states, 10159 states have (on average 1.0799291268825673) internal successors, (10971), 9972 states have internal predecessors, (10971), 1620 states have call successors, (1620), 320 states have call predecessors, (1620), 504 states have return successors, (5316), 1995 states have call predecessors, (5316), 1615 states have call successors, (5316) [2022-11-20 10:54:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12288 states to 12288 states and 17907 transitions. [2022-11-20 10:54:22,741 INFO L78 Accepts]: Start accepts. Automaton has 12288 states and 17907 transitions. Word has length 709 [2022-11-20 10:54:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:22,742 INFO L495 AbstractCegarLoop]: Abstraction has 12288 states and 17907 transitions. [2022-11-20 10:54:22,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.44) internal successors, (136), 27 states have internal predecessors, (136), 16 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (29), 12 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 10:54:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12288 states and 17907 transitions. [2022-11-20 10:54:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2022-11-20 10:54:22,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:22,747 INFO L195 NwaCegarLoop]: trace histogram [70, 67, 48, 48, 48, 48, 46, 46, 45, 45, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:22,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:22,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:22,948 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:54:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1856662175, now seen corresponding path program 20 times [2022-11-20 10:54:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086533585] [2022-11-20 10:54:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:22,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:54:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935328232] [2022-11-20 10:54:22,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:54:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:22,970 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:22,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-11-20 10:54:23,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:54:23,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:23,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 10:54:23,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16180 backedges. 8695 proven. 38 refuted. 0 times theorem prover too weak. 7447 trivial. 0 not checked. [2022-11-20 10:54:24,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16180 backedges. 2263 proven. 860 refuted. 0 times theorem prover too weak. 13057 trivial. 0 not checked. [2022-11-20 10:54:27,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086533585] [2022-11-20 10:54:27,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:54:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935328232] [2022-11-20 10:54:27,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935328232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:27,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:27,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 39 [2022-11-20 10:54:27,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386908316] [2022-11-20 10:54:27,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:27,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 10:54:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 10:54:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:54:27,073 INFO L87 Difference]: Start difference. First operand 12288 states and 17907 transitions. Second operand has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 21 states have call successors, (34), 2 states have call predecessors, (34), 8 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) [2022-11-20 10:54:30,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:30,855 INFO L93 Difference]: Finished difference Result 25398 states and 38010 transitions. [2022-11-20 10:54:30,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:54:30,855 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 21 states have call successors, (34), 2 states have call predecessors, (34), 8 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) Word has length 719 [2022-11-20 10:54:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:30,896 INFO L225 Difference]: With dead ends: 25398 [2022-11-20 10:54:30,896 INFO L226 Difference]: Without dead ends: 13317 [2022-11-20 10:54:30,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1393 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=463, Invalid=2617, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 10:54:30,924 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 188 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:30,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 374 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:54:30,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13317 states. [2022-11-20 10:54:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13317 to 12417. [2022-11-20 10:54:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 10275 states have (on average 1.0817518248175182) internal successors, (11115), 10085 states have internal predecessors, (11115), 1628 states have call successors, (1628), 319 states have call predecessors, (1628), 509 states have return successors, (5437), 2012 states have call predecessors, (5437), 1623 states have call successors, (5437) [2022-11-20 10:54:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 18180 transitions. [2022-11-20 10:54:33,097 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 18180 transitions. Word has length 719 [2022-11-20 10:54:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:33,097 INFO L495 AbstractCegarLoop]: Abstraction has 12417 states and 18180 transitions. [2022-11-20 10:54:33,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.435897435897436) internal successors, (173), 39 states have internal predecessors, (173), 21 states have call successors, (34), 2 states have call predecessors, (34), 8 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) [2022-11-20 10:54:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 18180 transitions. [2022-11-20 10:54:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-11-20 10:54:33,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:33,103 INFO L195 NwaCegarLoop]: trace histogram [72, 69, 50, 50, 50, 50, 48, 48, 47, 47, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:33,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:33,303 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:54:33,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1045258719, now seen corresponding path program 21 times [2022-11-20 10:54:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:33,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181693726] [2022-11-20 10:54:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:33,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:54:33,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871565438] [2022-11-20 10:54:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:54:33,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:33,330 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:33,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-11-20 10:54:33,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-20 10:54:33,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:33,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 10:54:33,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 17300 backedges. 2947 proven. 108 refuted. 0 times theorem prover too weak. 14245 trivial. 0 not checked. [2022-11-20 10:54:34,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:36,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:36,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181693726] [2022-11-20 10:54:36,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:54:36,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871565438] [2022-11-20 10:54:36,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871565438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:36,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:36,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-20 10:54:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118995435] [2022-11-20 10:54:36,973 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:36,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:54:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:54:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:54:36,975 INFO L87 Difference]: Start difference. First operand 12417 states and 18180 transitions. Second operand has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 19 states have internal predecessors, (69), 3 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 10:54:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:41,455 INFO L93 Difference]: Finished difference Result 12595 states and 19016 transitions. [2022-11-20 10:54:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:54:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 19 states have internal predecessors, (69), 3 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 3 states have call successors, (13) Word has length 739 [2022-11-20 10:54:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:41,501 INFO L225 Difference]: With dead ends: 12595 [2022-11-20 10:54:41,501 INFO L226 Difference]: Without dead ends: 12594 [2022-11-20 10:54:41,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:54:41,508 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 107 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:41,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 526 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 10:54:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12594 states. [2022-11-20 10:54:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12594 to 12410. [2022-11-20 10:54:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12410 states, 10267 states have (on average 1.0812311288594527) internal successors, (11101), 10083 states have internal predecessors, (11101), 1628 states have call successors, (1628), 319 states have call predecessors, (1628), 510 states have return successors, (5445), 2007 states have call predecessors, (5445), 1623 states have call successors, (5445) [2022-11-20 10:54:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 18174 transitions. [2022-11-20 10:54:43,572 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 18174 transitions. Word has length 739 [2022-11-20 10:54:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:43,572 INFO L495 AbstractCegarLoop]: Abstraction has 12410 states and 18174 transitions. [2022-11-20 10:54:43,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 19 states have internal predecessors, (69), 3 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 10:54:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 18174 transitions. [2022-11-20 10:54:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-11-20 10:54:43,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:43,578 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 49, 49, 49, 49, 49, 49, 48, 48, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:43,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:43,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-11-20 10:54:43,778 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:54:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1405400351, now seen corresponding path program 22 times [2022-11-20 10:54:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:43,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016000372] [2022-11-20 10:54:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:43,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:54:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991153826] [2022-11-20 10:54:43,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:54:43,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:43,883 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:43,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-20 10:54:44,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:54:44,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:44,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:54:44,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 7969 proven. 646 refuted. 0 times theorem prover too weak. 8677 trivial. 0 not checked. [2022-11-20 10:54:44,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 4277 proven. 1552 refuted. 0 times theorem prover too weak. 11463 trivial. 0 not checked. [2022-11-20 10:54:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:51,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016000372] [2022-11-20 10:54:51,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:54:51,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991153826] [2022-11-20 10:54:51,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991153826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:51,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:51,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 32] total 37 [2022-11-20 10:54:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872796250] [2022-11-20 10:54:51,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 10:54:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 10:54:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 10:54:51,231 INFO L87 Difference]: Start difference. First operand 12410 states and 18174 transitions. Second operand has 37 states, 33 states have (on average 5.454545454545454) internal successors, (180), 37 states have internal predecessors, (180), 23 states have call successors, (33), 2 states have call predecessors, (33), 16 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) [2022-11-20 10:54:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:55,859 INFO L93 Difference]: Finished difference Result 25349 states and 37997 transitions. [2022-11-20 10:54:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:54:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 5.454545454545454) internal successors, (180), 37 states have internal predecessors, (180), 23 states have call successors, (33), 2 states have call predecessors, (33), 16 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) Word has length 739 [2022-11-20 10:54:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:55,901 INFO L225 Difference]: With dead ends: 25349 [2022-11-20 10:54:55,901 INFO L226 Difference]: Without dead ends: 13284 [2022-11-20 10:54:55,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1430 SyntacticMatches, 16 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 10:54:55,933 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 254 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:55,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1079 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 10:54:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13284 states. [2022-11-20 10:54:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13284 to 12848. [2022-11-20 10:54:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12848 states, 10624 states have (on average 1.0797251506024097) internal successors, (11471), 10440 states have internal predecessors, (11471), 1659 states have call successors, (1659), 319 states have call predecessors, (1659), 560 states have return successors, (6118), 2088 states have call predecessors, (6118), 1654 states have call successors, (6118) [2022-11-20 10:54:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12848 states to 12848 states and 19248 transitions. [2022-11-20 10:54:57,932 INFO L78 Accepts]: Start accepts. Automaton has 12848 states and 19248 transitions. Word has length 739 [2022-11-20 10:54:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:57,933 INFO L495 AbstractCegarLoop]: Abstraction has 12848 states and 19248 transitions. [2022-11-20 10:54:57,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 5.454545454545454) internal successors, (180), 37 states have internal predecessors, (180), 23 states have call successors, (33), 2 states have call predecessors, (33), 16 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) [2022-11-20 10:54:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12848 states and 19248 transitions. [2022-11-20 10:54:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2022-11-20 10:54:57,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:57,940 INFO L195 NwaCegarLoop]: trace histogram [73, 70, 51, 51, 51, 51, 49, 49, 48, 48, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:57,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-11-20 10:54:58,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-11-20 10:54:58,141 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:54:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:58,142 INFO L85 PathProgramCache]: Analyzing trace with hash 773228353, now seen corresponding path program 23 times [2022-11-20 10:54:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:58,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078216299] [2022-11-20 10:54:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:58,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:54:58,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960642880] [2022-11-20 10:54:58,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:54:58,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:58,181 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:58,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-11-20 10:54:59,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-11-20 10:54:59,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:54:59,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 10:54:59,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 17875 backedges. 8351 proven. 1372 refuted. 0 times theorem prover too weak. 8152 trivial. 0 not checked. [2022-11-20 10:55:00,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17875 backedges. 4659 proven. 2507 refuted. 0 times theorem prover too weak. 10709 trivial. 0 not checked. [2022-11-20 10:55:06,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078216299] [2022-11-20 10:55:06,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:55:06,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960642880] [2022-11-20 10:55:06,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960642880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:06,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:55:06,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 39 [2022-11-20 10:55:06,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760990159] [2022-11-20 10:55:06,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 10:55:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 10:55:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:55:06,975 INFO L87 Difference]: Start difference. First operand 12848 states and 19248 transitions. Second operand has 39 states, 35 states have (on average 5.371428571428571) internal successors, (188), 39 states have internal predecessors, (188), 24 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (43), 20 states have call predecessors, (43), 24 states have call successors, (43) [2022-11-20 10:55:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:12,778 INFO L93 Difference]: Finished difference Result 26139 states and 40609 transitions. [2022-11-20 10:55:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 10:55:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 5.371428571428571) internal successors, (188), 39 states have internal predecessors, (188), 24 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (43), 20 states have call predecessors, (43), 24 states have call successors, (43) Word has length 749 [2022-11-20 10:55:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:12,822 INFO L225 Difference]: With dead ends: 26139 [2022-11-20 10:55:12,822 INFO L226 Difference]: Without dead ends: 13535 [2022-11-20 10:55:12,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1445 SyntacticMatches, 18 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=738, Invalid=3684, Unknown=0, NotChecked=0, Total=4422 [2022-11-20 10:55:12,859 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 336 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:12,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 929 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 2548 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:55:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2022-11-20 10:55:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 12871. [2022-11-20 10:55:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12871 states, 10644 states have (on average 1.078729800826757) internal successors, (11482), 10460 states have internal predecessors, (11482), 1661 states have call successors, (1661), 325 states have call predecessors, (1661), 561 states have return successors, (6193), 2085 states have call predecessors, (6193), 1658 states have call successors, (6193) [2022-11-20 10:55:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12871 states to 12871 states and 19336 transitions. [2022-11-20 10:55:14,913 INFO L78 Accepts]: Start accepts. Automaton has 12871 states and 19336 transitions. Word has length 749 [2022-11-20 10:55:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:14,914 INFO L495 AbstractCegarLoop]: Abstraction has 12871 states and 19336 transitions. [2022-11-20 10:55:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 5.371428571428571) internal successors, (188), 39 states have internal predecessors, (188), 24 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (43), 20 states have call predecessors, (43), 24 states have call successors, (43) [2022-11-20 10:55:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12871 states and 19336 transitions. [2022-11-20 10:55:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-11-20 10:55:14,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:14,919 INFO L195 NwaCegarLoop]: trace histogram [72, 69, 50, 50, 50, 50, 48, 48, 47, 47, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:14,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:15,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:15,120 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:55:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash -917471839, now seen corresponding path program 24 times [2022-11-20 10:55:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:15,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679637621] [2022-11-20 10:55:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:15,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:55:15,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136542206] [2022-11-20 10:55:15,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:55:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:15,147 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-11-20 10:55:24,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-11-20 10:55:24,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:55:24,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-20 10:55:24,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17300 backedges. 3833 proven. 431 refuted. 0 times theorem prover too weak. 13036 trivial. 0 not checked. [2022-11-20 10:56:02,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:05,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679637621] [2022-11-20 10:56:05,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:56:05,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136542206] [2022-11-20 10:56:05,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136542206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:05,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:56:05,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-20 10:56:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743933940] [2022-11-20 10:56:05,103 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:05,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 10:56:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 10:56:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2093, Unknown=8, NotChecked=0, Total=2256 [2022-11-20 10:56:05,104 INFO L87 Difference]: Start difference. First operand 12871 states and 19336 transitions. Second operand has 46 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 17 states have call successors, (20), 5 states have call predecessors, (20), 9 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 10:56:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:51,765 INFO L93 Difference]: Finished difference Result 31674 states and 52714 transitions. [2022-11-20 10:56:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 10:56:51,766 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 17 states have call successors, (20), 5 states have call predecessors, (20), 9 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) Word has length 739 [2022-11-20 10:56:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:51,843 INFO L225 Difference]: With dead ends: 31674 [2022-11-20 10:56:51,843 INFO L226 Difference]: Without dead ends: 19174 [2022-11-20 10:56:51,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 702 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 75.9s TimeCoverageRelationStatistics Valid=351, Invalid=4605, Unknown=14, NotChecked=0, Total=4970 [2022-11-20 10:56:51,888 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 170 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 4634 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:51,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1930 Invalid, 4963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4634 Invalid, 0 Unknown, 303 Unchecked, 4.0s Time] [2022-11-20 10:56:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19174 states. [2022-11-20 10:56:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19174 to 15312. [2022-11-20 10:56:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15312 states, 12709 states have (on average 1.0825399323314187) internal successors, (13758), 12464 states have internal predecessors, (13758), 1978 states have call successors, (1978), 372 states have call predecessors, (1978), 620 states have return successors, (7684), 2475 states have call predecessors, (7684), 1975 states have call successors, (7684) [2022-11-20 10:56:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15312 states to 15312 states and 23420 transitions. [2022-11-20 10:56:54,729 INFO L78 Accepts]: Start accepts. Automaton has 15312 states and 23420 transitions. Word has length 739 [2022-11-20 10:56:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:54,730 INFO L495 AbstractCegarLoop]: Abstraction has 15312 states and 23420 transitions. [2022-11-20 10:56:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 42 states have internal predecessors, (125), 17 states have call successors, (20), 5 states have call predecessors, (20), 9 states have return successors, (20), 16 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 10:56:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15312 states and 23420 transitions. [2022-11-20 10:56:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2022-11-20 10:56:54,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:54,738 INFO L195 NwaCegarLoop]: trace histogram [71, 69, 49, 49, 49, 49, 48, 48, 47, 47, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:54,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:54,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:54,939 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:56:54,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1219794436, now seen corresponding path program 25 times [2022-11-20 10:56:54,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:54,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335376582] [2022-11-20 10:56:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:54,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:56:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014009215] [2022-11-20 10:56:54,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:56:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:54,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:54,964 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:54,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-11-20 10:56:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:55,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 10:56:55,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17011 backedges. 6213 proven. 336 refuted. 0 times theorem prover too weak. 10462 trivial. 0 not checked. [2022-11-20 10:56:56,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17011 backedges. 2595 proven. 809 refuted. 0 times theorem prover too weak. 13607 trivial. 0 not checked. [2022-11-20 10:56:59,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335376582] [2022-11-20 10:56:59,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:56:59,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014009215] [2022-11-20 10:56:59,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014009215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:59,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:56:59,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 31 [2022-11-20 10:56:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109911272] [2022-11-20 10:56:59,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:59,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 10:56:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 10:56:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:56:59,610 INFO L87 Difference]: Start difference. First operand 15312 states and 23420 transitions. Second operand has 31 states, 29 states have (on average 4.827586206896552) internal successors, (140), 31 states have internal predecessors, (140), 18 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-20 10:57:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:03,732 INFO L93 Difference]: Finished difference Result 30215 states and 46486 transitions. [2022-11-20 10:57:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:57:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 4.827586206896552) internal successors, (140), 31 states have internal predecessors, (140), 18 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) Word has length 734 [2022-11-20 10:57:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:03,789 INFO L225 Difference]: With dead ends: 30215 [2022-11-20 10:57:03,790 INFO L226 Difference]: Without dead ends: 14897 [2022-11-20 10:57:03,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1418 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 10:57:03,843 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 293 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:03,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 540 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:57:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2022-11-20 10:57:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 14424. [2022-11-20 10:57:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14424 states, 11936 states have (on average 1.0793398123324396) internal successors, (12883), 11766 states have internal predecessors, (12883), 1907 states have call successors, (1907), 371 states have call predecessors, (1907), 576 states have return successors, (7205), 2286 states have call predecessors, (7205), 1904 states have call successors, (7205) [2022-11-20 10:57:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14424 states to 14424 states and 21995 transitions. [2022-11-20 10:57:06,332 INFO L78 Accepts]: Start accepts. Automaton has 14424 states and 21995 transitions. Word has length 734 [2022-11-20 10:57:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:06,332 INFO L495 AbstractCegarLoop]: Abstraction has 14424 states and 21995 transitions. [2022-11-20 10:57:06,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 4.827586206896552) internal successors, (140), 31 states have internal predecessors, (140), 18 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (27), 14 states have call predecessors, (27), 18 states have call successors, (27) [2022-11-20 10:57:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 14424 states and 21995 transitions. [2022-11-20 10:57:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2022-11-20 10:57:06,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:06,339 INFO L195 NwaCegarLoop]: trace histogram [76, 71, 54, 54, 54, 54, 50, 50, 49, 49, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:06,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-11-20 10:57:06,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:06,539 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:57:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash -486943167, now seen corresponding path program 26 times [2022-11-20 10:57:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:06,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014585457] [2022-11-20 10:57:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:06,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:06,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:57:06,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692759641] [2022-11-20 10:57:06,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:57:06,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:06,564 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:06,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-11-20 10:57:07,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:57:07,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:57:07,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 10:57:07,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19073 backedges. 2826 proven. 397 refuted. 0 times theorem prover too weak. 15850 trivial. 0 not checked. [2022-11-20 10:57:08,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19073 backedges. 2826 proven. 403 refuted. 0 times theorem prover too weak. 15844 trivial. 0 not checked. [2022-11-20 10:57:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:09,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014585457] [2022-11-20 10:57:09,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:57:09,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692759641] [2022-11-20 10:57:09,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692759641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:09,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:57:09,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 35] total 36 [2022-11-20 10:57:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863222157] [2022-11-20 10:57:09,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:09,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 10:57:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 10:57:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:57:09,843 INFO L87 Difference]: Start difference. First operand 14424 states and 21995 transitions. Second operand has 36 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 30 states have internal predecessors, (121), 19 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-20 10:57:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:16,193 INFO L93 Difference]: Finished difference Result 31425 states and 47959 transitions. [2022-11-20 10:57:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 10:57:16,193 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 30 states have internal predecessors, (121), 19 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) Word has length 769 [2022-11-20 10:57:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:16,244 INFO L225 Difference]: With dead ends: 31425 [2022-11-20 10:57:16,244 INFO L226 Difference]: Without dead ends: 17322 [2022-11-20 10:57:16,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1474 SyntacticMatches, 30 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=793, Invalid=4177, Unknown=0, NotChecked=0, Total=4970 [2022-11-20 10:57:16,283 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 213 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:16,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1222 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 10:57:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17322 states. [2022-11-20 10:57:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17322 to 14475. [2022-11-20 10:57:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14475 states, 11980 states have (on average 1.0776293823038396) internal successors, (12910), 11815 states have internal predecessors, (12910), 1890 states have call successors, (1890), 363 states have call predecessors, (1890), 600 states have return successors, (6733), 2296 states have call predecessors, (6733), 1887 states have call successors, (6733) [2022-11-20 10:57:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14475 states to 14475 states and 21533 transitions. [2022-11-20 10:57:19,328 INFO L78 Accepts]: Start accepts. Automaton has 14475 states and 21533 transitions. Word has length 769 [2022-11-20 10:57:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:19,329 INFO L495 AbstractCegarLoop]: Abstraction has 14475 states and 21533 transitions. [2022-11-20 10:57:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 30 states have internal predecessors, (121), 19 states have call successors, (22), 7 states have call predecessors, (22), 4 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-20 10:57:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14475 states and 21533 transitions. [2022-11-20 10:57:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2022-11-20 10:57:19,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:19,337 INFO L195 NwaCegarLoop]: trace histogram [83, 80, 59, 59, 59, 59, 57, 57, 56, 56, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:19,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-11-20 10:57:19,537 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-20 10:57:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1525532933, now seen corresponding path program 27 times [2022-11-20 10:57:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802968372] [2022-11-20 10:57:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:19,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:57:19,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79794149] [2022-11-20 10:57:19,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:57:19,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:19,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:19,567 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:19,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-11-20 10:57:20,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-20 10:57:20,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:57:20,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 10:57:20,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:33,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:33,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802968372] [2022-11-20 10:57:33,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:57:33,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79794149] [2022-11-20 10:57:33,341 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 10:57:33,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:33,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-11-20 10:57:33,551 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) [2022-11-20 10:57:33,554 INFO L158 Benchmark]: Toolchain (without parser) took 602568.24ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 148.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 499.7MB. Max. memory is 16.1GB. [2022-11-20 10:57:33,554 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:33,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.34ms. Allocated memory is still 192.9MB. Free memory was 148.5MB in the beginning and 138.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:33,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.14ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 137.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:33,555 INFO L158 Benchmark]: Boogie Preprocessor took 49.54ms. Allocated memory is still 192.9MB. Free memory was 137.3MB in the beginning and 136.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:33,555 INFO L158 Benchmark]: RCFGBuilder took 442.62ms. Allocated memory is still 192.9MB. Free memory was 136.0MB in the beginning and 123.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:57:33,555 INFO L158 Benchmark]: TraceAbstraction took 601758.26ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 122.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 474.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:33,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.34ms. Allocated memory is still 192.9MB. Free memory was 148.5MB in the beginning and 138.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.14ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 137.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.54ms. Allocated memory is still 192.9MB. Free memory was 137.3MB in the beginning and 136.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.62ms. Allocated memory is still 192.9MB. Free memory was 136.0MB in the beginning and 123.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 601758.26ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 122.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 474.5MB. 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. [2022-11-20 10:57:33,763 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 10:57:33,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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-6b4ec56 [2022-11-20 10:57:36,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:57:36,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:57:36,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:57:36,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:57:36,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:57:36,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:57:36,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:57:36,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:57:36,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:57:36,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:57:36,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:57:36,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:57:36,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:57:36,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:57:36,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:57:36,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:57:36,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:57:36,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:57:36,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:57:36,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:57:36,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:57:36,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:57:36,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:57:36,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:57:36,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:57:36,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:57:36,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:57:36,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:57:36,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:57:36,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:57:36,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:57:36,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:57:36,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:57:36,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:57:36,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:57:36,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:57:36,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:57:36,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:57:36,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:57:36,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:57:36,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-20 10:57:36,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:57:36,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:57:36,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:57:36,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:57:36,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:57:36,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:57:36,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:57:36,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:57:36,811 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:57:36,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:57:36,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:57:36,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:57:36,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:57:36,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:57:36,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:57:36,813 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:57:36,813 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:57:36,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:57:36,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:57:36,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:57:36,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:57:36,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:57:36,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:57:36,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:36,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:57:36,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:57:36,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:57:36,816 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:57:36,816 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:57:36,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:57:36,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:57:36,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:57:36,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:57:36,818 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-11-20 10:57:37,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:57:37,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:57:37,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:57:37,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:57:37,308 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:57:37,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-20 10:57:40,664 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:40,990 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:40,990 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/sv-benchmarks/c/termination-numeric/Binomial.c [2022-11-20 10:57:40,997 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/310e322af/499c0704db1d4c7fa3a4290652421750/FLAG809ed90ed [2022-11-20 10:57:41,018 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/data/310e322af/499c0704db1d4c7fa3a4290652421750 [2022-11-20 10:57:41,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:41,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:41,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:41,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:41,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:41,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3289c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41, skipping insertion in model container [2022-11-20 10:57:41,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:41,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:41,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:41,271 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:57:41,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:41,308 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:57:41,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41 WrapperNode [2022-11-20 10:57:41,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:41,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:41,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:57:41,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:57:41,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,353 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-20 10:57:41,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:41,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:57:41,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:57:41,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:57:41,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,377 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:57:41,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:57:41,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:57:41,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:57:41,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (1/1) ... [2022-11-20 10:57:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:41,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:41,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:57:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-11-20 10:57:41,506 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-11-20 10:57:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-11-20 10:57:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-11-20 10:57:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:57:41,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:57:41,612 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:57:41,614 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:57:41,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:57:41,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:57:41,952 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:57:41,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:41 BoogieIcfgContainer [2022-11-20 10:57:41,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:57:41,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:57:41,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:57:41,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:57:41,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:57:41" (1/3) ... [2022-11-20 10:57:41,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71429709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:41, skipping insertion in model container [2022-11-20 10:57:41,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:41" (2/3) ... [2022-11-20 10:57:41,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71429709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:41, skipping insertion in model container [2022-11-20 10:57:41,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:41" (3/3) ... [2022-11-20 10:57:41,966 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-11-20 10:57:42,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:57:42,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2022-11-20 10:57:42,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71429709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:57:42, skipping insertion in model container [2022-11-20 10:57:42,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:57:42,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:57:42,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:57:42,008 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:57:42,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:41" (3/3) ... [2022-11-20 10:57:42,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:57:42,020 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fact [2022-11-20 10:57:42,021 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure binomialCoefficient [2022-11-20 10:57:42,028 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 10:57:42,028 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:57:42,029 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:57:42,096 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:57:42,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:57:42,101 INFO L158 Benchmark]: Toolchain (without parser) took 1072.66ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 49.2MB in the beginning and 63.3MB in the end (delta: -14.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,102 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 48.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:42,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.36ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 39.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.51ms. Allocated memory is still 71.3MB. Free memory was 39.5MB in the beginning and 38.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:42,109 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,110 INFO L158 Benchmark]: RCFGBuilder took 573.17ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 36.8MB in the beginning and 69.0MB in the end (delta: -32.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,111 INFO L158 Benchmark]: TraceAbstraction took 49.60ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 66.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,111 INFO L158 Benchmark]: Witness Printer took 92.14ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 63.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:57:42,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 48.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.36ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 39.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.51ms. Allocated memory is still 71.3MB. Free memory was 39.5MB in the beginning and 38.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.13ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 573.17ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 36.8MB in the beginning and 69.0MB in the end (delta: -32.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 49.60ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 66.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 92.14ms. Allocated memory is still 96.5MB. Free memory was 66.4MB in the beginning and 63.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specification because the program does not contain any specification. RESULT: Ultimate proved your program to be correct! [2022-11-20 10:57:42,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dfccdd-b134-4c06-8499-03353e7f1caa/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE