./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8 --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 468953385e0ecb57effbe4a67e36beea0bc9797d81fab044af341dde527767a1 --- 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-2329fc7 [2022-12-13 14:48:04,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:48:04,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:48:04,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:48:04,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:48:04,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:48:04,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:48:04,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:48:04,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:48:04,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:48:04,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:48:04,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:48:04,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:48:04,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:48:04,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:48:04,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:48:04,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:48:04,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:48:04,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:48:04,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:48:04,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:48:04,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:48:04,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:48:04,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:48:04,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:48:04,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:48:04,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:48:04,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:48:04,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:48:04,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:48:04,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:48:04,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:48:04,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:48:04,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:48:04,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:48:04,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:48:04,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:48:04,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:48:04,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:48:04,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:48:04,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:48:04,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 14:48:04,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:48:04,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:48:04,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:48:04,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:48:04,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:48:04,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:48:04,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:48:04,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:48:04,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:48:04,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:48:04,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:48:04,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:48:04,883 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 468953385e0ecb57effbe4a67e36beea0bc9797d81fab044af341dde527767a1 [2022-12-13 14:48:05,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:48:05,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:48:05,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:48:05,063 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:48:05,063 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:48:05,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i [2022-12-13 14:48:07,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:48:07,807 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:48:07,807 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/sv-benchmarks/c/termination-memory-alloca/b.07-alloca.i [2022-12-13 14:48:07,815 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/data/74fcca4e8/ed6b7c3d4e204a90857b9383626eaece/FLAG10f5b6bd0 [2022-12-13 14:48:07,827 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/data/74fcca4e8/ed6b7c3d4e204a90857b9383626eaece [2022-12-13 14:48:07,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:48:07,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:48:07,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:48:07,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:48:07,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:48:07,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:48:07" (1/1) ... [2022-12-13 14:48:07,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77edfe1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:07, skipping insertion in model container [2022-12-13 14:48:07,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:48:07" (1/1) ... [2022-12-13 14:48:07,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:48:07,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:48:08,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:48:08,073 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:48:08,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:48:08,111 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:48:08,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08 WrapperNode [2022-12-13 14:48:08,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:48:08,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:48:08,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:48:08,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:48:08,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,139 INFO L138 Inliner]: procedures = 111, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2022-12-13 14:48:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:48:08,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:48:08,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:48:08,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:48:08,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:48:08,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:48:08,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:48:08,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:48:08,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (1/1) ... [2022-12-13 14:48:08,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:48:08,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:08,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:48:08,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:48:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:48:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:48:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:48:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:48:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:48:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:48:08,295 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:48:08,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:48:08,439 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:48:08,444 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:48:08,444 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:48:08,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:48:08 BoogieIcfgContainer [2022-12-13 14:48:08,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:48:08,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:48:08,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:48:08,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:48:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:48:07" (1/3) ... [2022-12-13 14:48:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e43258e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:48:08, skipping insertion in model container [2022-12-13 14:48:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:48:08" (2/3) ... [2022-12-13 14:48:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e43258e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:48:08, skipping insertion in model container [2022-12-13 14:48:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:48:08" (3/3) ... [2022-12-13 14:48:08,453 INFO L112 eAbstractionObserver]: Analyzing ICFG b.07-alloca.i [2022-12-13 14:48:08,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:48:08,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 14:48:08,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:48:08,511 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;@7798f458, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:48:08,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 14:48:08,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 14:48:08,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:08,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:48:08,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:08,526 INFO L85 PathProgramCache]: Analyzing trace with hash 889569447, now seen corresponding path program 1 times [2022-12-13 14:48:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030654274] [2022-12-13 14:48:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:08,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:08,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030654274] [2022-12-13 14:48:08,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030654274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:48:08,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:48:08,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:48:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983244137] [2022-12-13 14:48:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:48:08,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:48:08,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:48:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:48:09,019 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:09,126 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-12-13 14:48:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:48:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 14:48:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:09,136 INFO L225 Difference]: With dead ends: 49 [2022-12-13 14:48:09,136 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 14:48:09,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:48:09,142 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:09,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 14:48:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 17. [2022-12-13 14:48:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 14:48:09,175 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2022-12-13 14:48:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:09,176 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 14:48:09,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 14:48:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 14:48:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:09,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:48:09,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1806849133, now seen corresponding path program 1 times [2022-12-13 14:48:09,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:09,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860696716] [2022-12-13 14:48:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:09,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860696716] [2022-12-13 14:48:09,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860696716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:48:09,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:48:09,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:48:09,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118165426] [2022-12-13 14:48:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:48:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:48:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:48:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:48:09,763 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:09,833 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-12-13 14:48:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:48:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 14:48:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:09,834 INFO L225 Difference]: With dead ends: 17 [2022-12-13 14:48:09,834 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 14:48:09,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:48:09,836 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:09,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 14:48:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-13 14:48:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 14:48:09,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2022-12-13 14:48:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:09,841 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 14:48:09,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 14:48:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:48:09,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:09,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:09,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:48:09,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 177748329, now seen corresponding path program 1 times [2022-12-13 14:48:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:09,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766200990] [2022-12-13 14:48:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:10,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766200990] [2022-12-13 14:48:10,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766200990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:48:10,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:48:10,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:48:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062719224] [2022-12-13 14:48:10,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:48:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:48:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:48:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:48:10,241 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2022-12-13 14:48:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:10,303 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-12-13 14:48:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:48:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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 [2022-12-13 14:48:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:10,304 INFO L225 Difference]: With dead ends: 23 [2022-12-13 14:48:10,304 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 14:48:10,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:48:10,305 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:10,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 26 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:10,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 14:48:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-12-13 14:48:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-13 14:48:10,308 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2022-12-13 14:48:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:10,309 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-13 14:48:10,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2022-12-13 14:48:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-13 14:48:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 14:48:10,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:10,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:10,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:48:10,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1215230959, now seen corresponding path program 1 times [2022-12-13 14:48:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:10,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322119905] [2022-12-13 14:48:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:10,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322119905] [2022-12-13 14:48:10,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322119905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:48:10,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:48:10,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:48:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277912463] [2022-12-13 14:48:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:48:10,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:48:10,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:48:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:48:10,674 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:10,697 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-12-13 14:48:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:48:10,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 14:48:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:10,698 INFO L225 Difference]: With dead ends: 20 [2022-12-13 14:48:10,698 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 14:48:10,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:48:10,700 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:10,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 14:48:10,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-13 14:48:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-12-13 14:48:10,704 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-12-13 14:48:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:10,704 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-12-13 14:48:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-12-13 14:48:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 14:48:10,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:10,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:48:10,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -822685100, now seen corresponding path program 1 times [2022-12-13 14:48:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592404884] [2022-12-13 14:48:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:48:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:10,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592404884] [2022-12-13 14:48:10,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592404884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:10,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070803713] [2022-12-13 14:48:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:10,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:48:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:48:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:11,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 14:48:11,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:48:11,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:11,316 INFO L321 Elim1Store]: treesize reduction 204, result has 28.7 percent of original size [2022-12-13 14:48:11,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 344 [2022-12-13 14:48:11,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 838 treesize of output 822 [2022-12-13 14:48:11,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 14:48:11,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-13 14:48:11,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-12-13 14:48:12,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:12,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:12,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:12,368 INFO L321 Elim1Store]: treesize reduction 173, result has 14.8 percent of original size [2022-12-13 14:48:12,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 607 treesize of output 619 [2022-12-13 14:48:12,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:48:12,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:12,717 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2022-12-13 14:48:12,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 152 treesize of output 21 [2022-12-13 14:48:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:48:12,758 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2022-12-13 14:48:12,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 152 treesize of output 21 [2022-12-13 14:48:12,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-12-13 14:48:12,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2022-12-13 14:48:14,432 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-12-13 14:48:14,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 57 [2022-12-13 14:48:14,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 14:48:14,508 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 14:48:14,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2022-12-13 14:48:14,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-12-13 14:48:14,681 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:48:14,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2022-12-13 14:48:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:14,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:48:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:15,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070803713] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:48:15,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:48:15,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 20 [2022-12-13 14:48:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30054676] [2022-12-13 14:48:15,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:48:15,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 14:48:15,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 14:48:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=306, Unknown=16, NotChecked=0, Total=420 [2022-12-13 14:48:15,035 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:15,770 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-12-13 14:48:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:48:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 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 13 [2022-12-13 14:48:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:15,772 INFO L225 Difference]: With dead ends: 27 [2022-12-13 14:48:15,772 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 14:48:15,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=482, Unknown=16, NotChecked=0, Total=702 [2022-12-13 14:48:15,773 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:15,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 20 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:48:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 14:48:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2022-12-13 14:48:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 14:48:15,778 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2022-12-13 14:48:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:15,778 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 14:48:15,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:48:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 14:48:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:48:15,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:15,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 14:48:15,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:48:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:15,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 14:48:15,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash -326396970, now seen corresponding path program 1 times [2022-12-13 14:48:15,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:15,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608674860] [2022-12-13 14:48:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:48:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:16,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608674860] [2022-12-13 14:48:16,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608674860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:16,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448080473] [2022-12-13 14:48:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:16,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:16,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:48:16,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82257f16-2321-40da-af56-3adea631f9a5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:48:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:16,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 14:48:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:48:30,083 WARN L233 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 303 DAG size of output: 145 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 14:48:30,084 INFO L321 Elim1Store]: treesize reduction 1044, result has 31.4 percent of original size [2022-12-13 14:48:30,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 12 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 14 new quantified variables, introduced 49 case distinctions, treesize of input 8118 treesize of output 6729 [2022-12-13 14:48:30,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2022-12-13 14:48:31,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 42 [2022-12-13 14:48:31,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 44 [2022-12-13 14:48:32,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2022-12-13 14:48:32,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2022-12-13 14:48:41,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2022-12-13 14:48:42,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:49:00,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:49:16,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:19,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:20,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:23,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:24,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:36,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:38,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:38,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:39,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:51,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:49:59,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:50:00,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:50:15,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:50:15,738 INFO L217 Elim1Store]: Index analysis took 75289 ms [2022-12-13 14:50:19,705 INFO L321 Elim1Store]: treesize reduction 728, result has 4.3 percent of original size [2022-12-13 14:50:19,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 45 case distinctions, treesize of input 6415 treesize of output 9460 [2022-12-13 14:52:46,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37271 treesize of output 34579 [2022-12-13 14:53:29,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:53:29,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 5 [2022-12-13 14:53:29,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:53:29,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 5 [2022-12-13 14:53:33,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:53:35,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13