./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s32if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s32if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:52:06,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:52:06,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:52:06,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:52:06,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:52:06,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:52:06,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:52:06,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:52:06,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:52:06,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:52:06,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:52:06,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:52:06,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:52:06,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:52:06,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:52:06,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:52:06,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:52:06,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:52:06,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:52:06,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:52:06,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:52:06,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:52:06,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:52:06,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:52:06,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:52:06,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:52:06,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:52:06,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:52:06,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:52:06,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:52:06,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:52:06,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:52:06,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:52:06,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:52:06,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:52:06,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:52:06,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:52:06,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:52:06,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:52:06,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:52:06,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:52:06,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:52:06,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:52:06,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:52:06,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:52:06,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:52:06,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:52:06,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:52:06,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:52:06,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:52:06,253 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:52:06,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:52:06,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:52:06,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:52:06,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:52:06,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:52:06,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:52:06,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:52:06,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:52:06,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:52:06,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:52:06,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:06,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:52:06,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:52:06,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:52:06,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:52:06,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:52:06,271 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:52:06,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:52:06,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:52:06,272 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_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 [2022-11-18 19:52:06,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:52:06,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:52:06,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:52:06,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:52:06,626 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:52:06,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/s32if.c [2022-11-18 19:52:06,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/data/b87b90e2f/e19751b1e81c428c9263c881f5fe959d/FLAG8ed3c56ca [2022-11-18 19:52:07,235 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:52:07,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/sv-benchmarks/c/array-fpi/s32if.c [2022-11-18 19:52:07,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/data/b87b90e2f/e19751b1e81c428c9263c881f5fe959d/FLAG8ed3c56ca [2022-11-18 19:52:07,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/data/b87b90e2f/e19751b1e81c428c9263c881f5fe959d [2022-11-18 19:52:07,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:52:07,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:52:07,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:07,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:52:07,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:52:07,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a625aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07, skipping insertion in model container [2022-11-18 19:52:07,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:52:07,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:52:07,812 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/sv-benchmarks/c/array-fpi/s32if.c[588,601] [2022-11-18 19:52:07,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:07,845 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:52:07,858 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/sv-benchmarks/c/array-fpi/s32if.c[588,601] [2022-11-18 19:52:07,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:07,881 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:52:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07 WrapperNode [2022-11-18 19:52:07,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:07,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:07,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:52:07,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:52:07,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,933 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-18 19:52:07,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:07,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:52:07,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:52:07,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:52:07,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,967 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:52:07,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:52:07,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:52:07,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:52:07,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (1/1) ... [2022-11-18 19:52:07,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:08,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:08,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:52:08,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:52:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:52:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:52:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:52:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:52:08,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:52:08,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:52:08,426 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:52:08,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:52:08,432 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:52:08,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:08 BoogieIcfgContainer [2022-11-18 19:52:08,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:52:08,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:52:08,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:52:08,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:52:08,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:52:07" (1/3) ... [2022-11-18 19:52:08,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ffca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:08, skipping insertion in model container [2022-11-18 19:52:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:07" (2/3) ... [2022-11-18 19:52:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ffca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:08, skipping insertion in model container [2022-11-18 19:52:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:08" (3/3) ... [2022-11-18 19:52:08,454 INFO L112 eAbstractionObserver]: Analyzing ICFG s32if.c [2022-11-18 19:52:08,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:52:08,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:52:08,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:52:08,555 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;@4e751c3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:52:08,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:52:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:52:08,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:08,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:08,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2022-11-18 19:52:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495424116] [2022-11-18 19:52:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495424116] [2022-11-18 19:52:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495424116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:08,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:52:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961731523] [2022-11-18 19:52:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:52:08,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:52:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:52:08,881 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:08,898 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-18 19:52:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:52:08,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 [2022-11-18 19:52:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:08,910 INFO L225 Difference]: With dead ends: 42 [2022-11-18 19:52:08,910 INFO L226 Difference]: Without dead ends: 19 [2022-11-18 19:52:08,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:52:08,919 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:08,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:52:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-18 19:52:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-18 19:52:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-18 19:52:08,970 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2022-11-18 19:52:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:08,970 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-18 19:52:08,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-18 19:52:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:52:08,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:08,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:52:08,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2022-11-18 19:52:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:08,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762749219] [2022-11-18 19:52:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:09,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762749219] [2022-11-18 19:52:09,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762749219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:09,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:09,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:52:09,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264415779] [2022-11-18 19:52:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:09,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:09,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:09,240 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:09,378 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2022-11-18 19:52:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:52:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 [2022-11-18 19:52:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:09,380 INFO L225 Difference]: With dead ends: 39 [2022-11-18 19:52:09,381 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 19:52:09,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:09,384 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:09,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:52:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 19:52:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-18 19:52:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-18 19:52:09,396 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2022-11-18 19:52:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:09,399 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-18 19:52:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-18 19:52:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:52:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:09,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:09,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:52:09,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2022-11-18 19:52:09,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:09,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547248217] [2022-11-18 19:52:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:09,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:10,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547248217] [2022-11-18 19:52:10,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547248217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:10,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372173577] [2022-11-18 19:52:10,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:10,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:10,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:10,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:52:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:10,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:52:10,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:10,689 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 10 treesize of output 8 [2022-11-18 19:52:10,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:52:10,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:10,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:10,979 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:52:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:11,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:11,244 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_45 (Array Int Int))) (let ((.cse0 (select v_ArrVal_45 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (or (not (= 4 .cse0)) (= (* c_~N~0 4) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0))))) is different from false [2022-11-18 19:52:11,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:11,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-18 19:52:11,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:52:11,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 18 [2022-11-18 19:52:11,441 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 22 treesize of output 10 [2022-11-18 19:52:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:52:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372173577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:11,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2022-11-18 19:52:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090136587] [2022-11-18 19:52:11,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:52:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:52:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=357, Unknown=1, NotChecked=40, Total=506 [2022-11-18 19:52:11,499 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:20,494 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2022-11-18 19:52:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:52:20,495 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 21 [2022-11-18 19:52:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:20,497 INFO L225 Difference]: With dead ends: 53 [2022-11-18 19:52:20,497 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 19:52:20,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=249, Invalid=810, Unknown=1, NotChecked=62, Total=1122 [2022-11-18 19:52:20,502 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:20,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 83 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 151 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-11-18 19:52:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 19:52:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-11-18 19:52:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:20,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2022-11-18 19:52:20,529 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 21 [2022-11-18 19:52:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:20,529 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2022-11-18 19:52:20,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2022-11-18 19:52:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:52:20,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:20,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:20,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:52:20,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:20,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2022-11-18 19:52:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:20,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927180632] [2022-11-18 19:52:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:20,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541681653] [2022-11-18 19:52:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:20,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:20,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:20,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:52:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:20,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:52:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:20,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2022-11-18 19:52:20,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:52:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:21,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:21,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 31 [2022-11-18 19:52:21,115 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 19:52:21,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 24 [2022-11-18 19:52:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:21,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927180632] [2022-11-18 19:52:21,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:21,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541681653] [2022-11-18 19:52:21,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541681653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:21,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:21,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-18 19:52:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748133978] [2022-11-18 19:52:21,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:21,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:52:21,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:52:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:52:21,144 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:21,402 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-11-18 19:52:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:52:21,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 21 [2022-11-18 19:52:21,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:21,404 INFO L225 Difference]: With dead ends: 63 [2022-11-18 19:52:21,404 INFO L226 Difference]: Without dead ends: 51 [2022-11-18 19:52:21,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:52:21,406 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:21,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 58 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:52:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-18 19:52:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2022-11-18 19:52:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-11-18 19:52:21,417 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 21 [2022-11-18 19:52:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:21,417 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-18 19:52:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-11-18 19:52:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:52:21,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:21,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:21,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:52:21,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:21,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1649883961, now seen corresponding path program 1 times [2022-11-18 19:52:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257916365] [2022-11-18 19:52:21,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:22,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257916365] [2022-11-18 19:52:22,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257916365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:22,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516934366] [2022-11-18 19:52:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:22,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:52:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:22,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:52:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:22,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:52:22,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:52:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:22,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:22,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 12 [2022-11-18 19:52:22,348 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 18 treesize of output 16 [2022-11-18 19:52:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:22,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516934366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:22,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:22,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2022-11-18 19:52:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376433344] [2022-11-18 19:52:22,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:22,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:52:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:52:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:52:22,373 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:23,191 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2022-11-18 19:52:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:52:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 21 [2022-11-18 19:52:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:23,196 INFO L225 Difference]: With dead ends: 79 [2022-11-18 19:52:23,196 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 19:52:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:52:23,198 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 81 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:52:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 19:52:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-11-18 19:52:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2022-11-18 19:52:23,211 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2022-11-18 19:52:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:23,211 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2022-11-18 19:52:23,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2022-11-18 19:52:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:52:23,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:23,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:23,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:23,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:23,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2022-11-18 19:52:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338158449] [2022-11-18 19:52:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:23,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338158449] [2022-11-18 19:52:23,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338158449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:23,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973805827] [2022-11-18 19:52:23,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:52:23,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:23,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:23,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:52:23,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:52:23,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:23,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:52:23,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:23,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:23,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973805827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:23,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:23,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:52:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251784530] [2022-11-18 19:52:23,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:23,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:52:23,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:52:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:52:23,778 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:24,031 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-18 19:52:24,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:24,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:52:24,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:24,034 INFO L225 Difference]: With dead ends: 85 [2022-11-18 19:52:24,034 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 19:52:24,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:52:24,035 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:24,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:52:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 19:52:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2022-11-18 19:52:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-18 19:52:24,049 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2022-11-18 19:52:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:24,049 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-18 19:52:24,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,050 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-18 19:52:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:52:24,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:24,052 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, 1] [2022-11-18 19:52:24,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:24,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:24,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2022-11-18 19:52:24,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:24,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80305835] [2022-11-18 19:52:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80305835] [2022-11-18 19:52:24,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80305835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628845239] [2022-11-18 19:52:24,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:52:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:24,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:52:24,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:52:24,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:24,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:52:24,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:24,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:52:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628845239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:24,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:24,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-18 19:52:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186638316] [2022-11-18 19:52:24,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:24,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:52:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:52:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:52:24,590 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:24,786 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-11-18 19:52:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:52:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:52:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:24,787 INFO L225 Difference]: With dead ends: 78 [2022-11-18 19:52:24,788 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 19:52:24,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:52:24,789 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:24,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:52:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 19:52:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-18 19:52:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-18 19:52:24,798 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2022-11-18 19:52:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:24,798 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-18 19:52:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-18 19:52:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:52:24,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:24,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:24,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:25,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2022-11-18 19:52:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751709644] [2022-11-18 19:52:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:52:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751709644] [2022-11-18 19:52:26,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751709644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993888031] [2022-11-18 19:52:26,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:52:26,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:26,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:26,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:26,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:52:26,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:52:26,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:26,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:52:26,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:26,216 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 10 treesize of output 8 [2022-11-18 19:52:26,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:52:26,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:26,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:26,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:26,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:26,658 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:52:26,834 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:26,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 41 [2022-11-18 19:52:27,005 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:27,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 30 [2022-11-18 19:52:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:27,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:27,547 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (not (= .cse0 4)) (= (+ .cse1 .cse0 .cse2) (* c_~N~0 4)) (not (= 4 .cse2)))))))) is different from false [2022-11-18 19:52:27,580 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_208 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_64| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_208))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_208 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_64| 4))))) (or (not (= .cse0 4)) (= (+ .cse1 .cse0 .cse2) (* c_~N~0 4)) (not (= 4 .cse2)))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) is different from false [2022-11-18 19:52:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 19:52:28,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993888031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:28,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:28,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 38 [2022-11-18 19:52:28,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325554452] [2022-11-18 19:52:28,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:28,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:52:28,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:52:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1127, Unknown=4, NotChecked=138, Total=1406 [2022-11-18 19:52:28,815 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:29,519 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2022-11-18 19:52:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:52:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 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 29 [2022-11-18 19:52:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:29,522 INFO L225 Difference]: With dead ends: 69 [2022-11-18 19:52:29,522 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 19:52:29,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=1668, Unknown=4, NotChecked=170, Total=2070 [2022-11-18 19:52:29,524 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:29,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 91 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 255 Unchecked, 0.2s Time] [2022-11-18 19:52:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 19:52:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2022-11-18 19:52:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2022-11-18 19:52:29,547 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 29 [2022-11-18 19:52:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2022-11-18 19:52:29,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2022-11-18 19:52:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:52:29,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:29,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:29,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:29,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:52:29,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2022-11-18 19:52:29,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:29,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54415263] [2022-11-18 19:52:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:29,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:52:29,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281663376] [2022-11-18 19:52:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:29,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:29,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:29,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:29,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:52:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:29,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:52:29,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:30,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 15 [2022-11-18 19:52:30,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:30,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:52:30,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:52:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:52:30,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:30,272 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_253 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_253) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 19:52:30,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:30,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:52:30,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:52:30,356 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 38 treesize of output 34 [2022-11-18 19:52:30,369 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 3 [2022-11-18 19:52:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-11-18 19:52:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54415263] [2022-11-18 19:52:32,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:52:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281663376] [2022-11-18 19:52:32,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281663376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:32,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:32,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-18 19:52:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544214443] [2022-11-18 19:52:32,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:32,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:52:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:52:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=244, Unknown=3, NotChecked=32, Total=342 [2022-11-18 19:52:32,478 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:32,904 INFO L93 Difference]: Finished difference Result 103 states and 128 transitions. [2022-11-18 19:52:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:52:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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 29 [2022-11-18 19:52:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:32,907 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:52:32,907 INFO L226 Difference]: Without dead ends: 96 [2022-11-18 19:52:32,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=95, Invalid=326, Unknown=3, NotChecked=38, Total=462 [2022-11-18 19:52:32,908 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:32,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 111 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2022-11-18 19:52:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-18 19:52:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-11-18 19:52:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2022-11-18 19:52:32,929 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 29 [2022-11-18 19:52:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:32,929 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2022-11-18 19:52:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2022-11-18 19:52:32,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:52:32,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:32,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:32,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:33,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:33,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1025550548, now seen corresponding path program 1 times [2022-11-18 19:52:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:33,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859674145] [2022-11-18 19:52:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:52:34,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:34,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859674145] [2022-11-18 19:52:34,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859674145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:34,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187959370] [2022-11-18 19:52:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:34,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:34,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:34,198 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:34,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:52:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:34,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:52:34,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:34,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:52:34,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:34,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:52:34,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:52:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:34,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:34,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 14 [2022-11-18 19:52:34,674 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 20 treesize of output 16 [2022-11-18 19:52:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:34,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187959370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:34,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:34,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2022-11-18 19:52:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676713567] [2022-11-18 19:52:34,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:52:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:52:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:52:34,745 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:36,590 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2022-11-18 19:52:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:52:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 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 29 [2022-11-18 19:52:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:36,591 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:52:36,592 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:52:36,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 19:52:36,594 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 122 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:36,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 146 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:52:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:52:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2022-11-18 19:52:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2022-11-18 19:52:36,627 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 29 [2022-11-18 19:52:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:36,628 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2022-11-18 19:52:36,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2022-11-18 19:52:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:52:36,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:36,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:36,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:36,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:36,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:36,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2022-11-18 19:52:36,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:36,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056658660] [2022-11-18 19:52:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:36,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056658660] [2022-11-18 19:52:36,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056658660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:36,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885652060] [2022-11-18 19:52:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:52:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:36,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:37,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:52:37,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 19:52:37,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:37,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:52:37,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:37,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:37,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885652060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:37,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:37,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:52:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131392192] [2022-11-18 19:52:37,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:37,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:52:37,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:52:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:52:37,307 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:37,660 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2022-11-18 19:52:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:52:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 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 31 [2022-11-18 19:52:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:37,661 INFO L225 Difference]: With dead ends: 115 [2022-11-18 19:52:37,662 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:52:37,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:52:37,663 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:37,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 31 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:52:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:52:37,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2022-11-18 19:52:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2022-11-18 19:52:37,682 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 31 [2022-11-18 19:52:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:37,683 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2022-11-18 19:52:37,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2022-11-18 19:52:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:52:37,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:37,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:37,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:37,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:37,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2022-11-18 19:52:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:37,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133861214] [2022-11-18 19:52:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:38,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:38,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133861214] [2022-11-18 19:52:38,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133861214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:38,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096650386] [2022-11-18 19:52:38,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:52:38,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:38,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:38,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:52:38,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 19:52:38,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:52:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:52:38,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:38,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:52:38,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096650386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:38,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:38,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-18 19:52:38,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217351794] [2022-11-18 19:52:38,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:38,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:52:38,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:38,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:52:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:52:38,360 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:38,592 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2022-11-18 19:52:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:52:38,593 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:52:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:38,594 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:52:38,594 INFO L226 Difference]: Without dead ends: 50 [2022-11-18 19:52:38,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:52:38,595 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 74 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:38,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 28 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:52:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-18 19:52:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-11-18 19:52:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-18 19:52:38,606 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 32 [2022-11-18 19:52:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:38,606 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-18 19:52:38,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:52:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-18 19:52:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:52:38,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:38,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:38,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:38,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:38,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:52:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:38,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2022-11-18 19:52:38,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:52:38,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048393456] [2022-11-18 19:52:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:38,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:52:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:52:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:52:40,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048393456] [2022-11-18 19:52:40,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048393456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:40,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578098943] [2022-11-18 19:52:40,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:52:40,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:52:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:40,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:52:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:52:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:40,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 19:52:40,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:40,467 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 10 treesize of output 8 [2022-11-18 19:52:40,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:52:40,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:40,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:52:41,032 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:52:41,198 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:41,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:52:41,387 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:52:41,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:52:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:52:41,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:42,564 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_132| Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_132| 4))))) (let ((.cse0 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_130| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (not (= .cse2 4)) (= (+ .cse1 .cse2 .cse0 .cse3) (* c_~N~0 4))))))))) is different from false [2022-11-18 19:52:43,989 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:52:43,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 407 treesize of output 1 [2022-11-18 19:52:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 5 not checked. [2022-11-18 19:52:43,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578098943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:43,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:52:43,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 45 [2022-11-18 19:52:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636420214] [2022-11-18 19:52:43,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:43,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 19:52:43,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:52:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 19:52:43,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1701, Unknown=1, NotChecked=84, Total=1980 [2022-11-18 19:52:43,997 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 45 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:06,869 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2022-11-18 19:53:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:53:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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 37 [2022-11-18 19:53:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:06,871 INFO L225 Difference]: With dead ends: 106 [2022-11-18 19:53:06,871 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 19:53:06,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 60 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=648, Invalid=4047, Unknown=1, NotChecked=134, Total=4830 [2022-11-18 19:53:06,874 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 162 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 672 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 97 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 502 Invalid, 0 Unknown, 672 Unchecked, 0.6s Time] [2022-11-18 19:53:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 19:53:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-11-18 19:53:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2022-11-18 19:53:06,896 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 37 [2022-11-18 19:53:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:06,897 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2022-11-18 19:53:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2022-11-18 19:53:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:53:06,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:06,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:06,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:07,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:53:07,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2022-11-18 19:53:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190321545] [2022-11-18 19:53:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:07,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:07,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53758085] [2022-11-18 19:53:07,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:07,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:07,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:53:07,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:07,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:07,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:53:07,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:07,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 15 [2022-11-18 19:53:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:07,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:53:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:07,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:53:07,739 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:07,739 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 21 treesize of output 17 [2022-11-18 19:53:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:07,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:09,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:09,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2022-11-18 19:53:09,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:09,966 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 42 treesize of output 38 [2022-11-18 19:53:09,972 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 13 treesize of output 7 [2022-11-18 19:53:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190321545] [2022-11-18 19:53:10,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53758085] [2022-11-18 19:53:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53758085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:10,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:10,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-18 19:53:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357667519] [2022-11-18 19:53:10,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:53:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:53:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=912, Unknown=9, NotChecked=0, Total=1122 [2022-11-18 19:53:10,469 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:11,270 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2022-11-18 19:53:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:53:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 19:53:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:11,272 INFO L225 Difference]: With dead ends: 143 [2022-11-18 19:53:11,272 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 19:53:11,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=386, Invalid=1497, Unknown=9, NotChecked=0, Total=1892 [2022-11-18 19:53:11,273 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 213 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 57 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 414 Invalid, 1 Unknown, 156 Unchecked, 0.4s Time] [2022-11-18 19:53:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 19:53:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2022-11-18 19:53:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2636363636363637) internal successors, (139), 110 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2022-11-18 19:53:11,304 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 37 [2022-11-18 19:53:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:11,304 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2022-11-18 19:53:11,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2022-11-18 19:53:11,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:53:11,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:11,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:11,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:11,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:53:11,515 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2063837675, now seen corresponding path program 3 times [2022-11-18 19:53:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21965132] [2022-11-18 19:53:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:11,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:11,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143135976] [2022-11-18 19:53:11,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:11,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:11,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:11,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:11,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:53:11,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 19:53:11,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:11,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:53:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:11,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 17 [2022-11-18 19:53:11,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 27 [2022-11-18 19:53:11,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:11,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-18 19:53:12,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:12,002 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 24 treesize of output 21 [2022-11-18 19:53:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:53:12,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:17,460 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_551 Int) (|v_ULTIMATE.start_main_~i~0#1_171| Int) (v_ArrVal_553 (Array Int Int))) (let ((.cse0 (+ |v_ULTIMATE.start_main_~i~0#1_171| 1))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_171| 4))) 4) (< .cse0 |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~i~0#1| .cse0)))) is different from false [2022-11-18 19:53:17,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:17,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 46 [2022-11-18 19:53:17,635 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-11-18 19:53:17,635 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 42 treesize of output 30 [2022-11-18 19:53:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 3 not checked. [2022-11-18 19:53:19,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:19,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21965132] [2022-11-18 19:53:19,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:19,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143135976] [2022-11-18 19:53:19,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143135976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:19,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:19,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2022-11-18 19:53:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627078449] [2022-11-18 19:53:19,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:19,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:53:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:53:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=407, Unknown=13, NotChecked=42, Total=552 [2022-11-18 19:53:19,689 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:30,358 INFO L93 Difference]: Finished difference Result 185 states and 238 transitions. [2022-11-18 19:53:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 19:53:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 19:53:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:30,360 INFO L225 Difference]: With dead ends: 185 [2022-11-18 19:53:30,360 INFO L226 Difference]: Without dead ends: 181 [2022-11-18 19:53:30,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=273, Invalid=1425, Unknown=28, NotChecked=80, Total=1806 [2022-11-18 19:53:30,362 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:30,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 56 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 134 Invalid, 0 Unknown, 247 Unchecked, 0.1s Time] [2022-11-18 19:53:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-18 19:53:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 149. [2022-11-18 19:53:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3310810810810811) internal successors, (197), 148 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 197 transitions. [2022-11-18 19:53:30,399 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 197 transitions. Word has length 37 [2022-11-18 19:53:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:30,399 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 197 transitions. [2022-11-18 19:53:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 197 transitions. [2022-11-18 19:53:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:53:30,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:30,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:30,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-18 19:53:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:53:30,606 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 1 times [2022-11-18 19:53:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:30,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662108824] [2022-11-18 19:53:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:30,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856759035] [2022-11-18 19:53:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:30,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:30,625 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:30,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:53:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:30,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:53:30,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:30,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:53:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:30,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:53:30,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:30,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:53:30,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:53:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:30,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:31,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 14 [2022-11-18 19:53:31,026 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 20 treesize of output 16 [2022-11-18 19:53:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662108824] [2022-11-18 19:53:31,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:31,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856759035] [2022-11-18 19:53:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856759035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:31,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:31,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-18 19:53:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454493317] [2022-11-18 19:53:31,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:53:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:53:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:53:31,078 INFO L87 Difference]: Start difference. First operand 149 states and 197 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:31,478 INFO L93 Difference]: Finished difference Result 246 states and 335 transitions. [2022-11-18 19:53:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:53:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 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 37 [2022-11-18 19:53:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:31,480 INFO L225 Difference]: With dead ends: 246 [2022-11-18 19:53:31,480 INFO L226 Difference]: Without dead ends: 163 [2022-11-18 19:53:31,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:53:31,481 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:31,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 85 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:53:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-18 19:53:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2022-11-18 19:53:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2022-11-18 19:53:31,516 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 37 [2022-11-18 19:53:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:31,517 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2022-11-18 19:53:31,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2022-11-18 19:53:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:53:31,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:31,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:31,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:53:31,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2022-11-18 19:53:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627036552] [2022-11-18 19:53:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627036552] [2022-11-18 19:53:31,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627036552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40970965] [2022-11-18 19:53:31,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:31,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:31,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:53:32,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:53:32,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:32,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:32,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40970965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:32,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:32,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 19:53:32,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821135955] [2022-11-18 19:53:32,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:32,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:53:32,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:53:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:53:32,230 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:32,757 INFO L93 Difference]: Finished difference Result 194 states and 255 transitions. [2022-11-18 19:53:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 19:53:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:32,759 INFO L225 Difference]: With dead ends: 194 [2022-11-18 19:53:32,759 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 19:53:32,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:53:32,760 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 37 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:53:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 19:53:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 105. [2022-11-18 19:53:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2022-11-18 19:53:32,786 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 39 [2022-11-18 19:53:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:32,786 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2022-11-18 19:53:32,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2022-11-18 19:53:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:53:32,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:32,787 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:32,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:32,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:32,991 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2022-11-18 19:53:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:32,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234495486] [2022-11-18 19:53:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234495486] [2022-11-18 19:53:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234495486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697219653] [2022-11-18 19:53:33,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:53:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:33,176 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:33,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:53:33,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 19:53:33,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:53:33,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:33,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:33,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697219653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:33,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:33,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-18 19:53:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232095865] [2022-11-18 19:53:33,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:53:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:53:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:53:33,608 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:33,877 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2022-11-18 19:53:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:53:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 40 [2022-11-18 19:53:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:33,878 INFO L225 Difference]: With dead ends: 131 [2022-11-18 19:53:33,878 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 19:53:33,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:53:33,879 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 35 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:53:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 19:53:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2022-11-18 19:53:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-11-18 19:53:33,890 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 40 [2022-11-18 19:53:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-11-18 19:53:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-11-18 19:53:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:53:33,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:33,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:33,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:34,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:53:34,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:53:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:34,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2022-11-18 19:53:34,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:34,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398537654] [2022-11-18 19:53:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:34,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398537654] [2022-11-18 19:53:36,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398537654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:36,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762738776] [2022-11-18 19:53:36,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:53:36,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:36,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:36,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:53:36,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:53:36,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:36,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 19:53:36,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:36,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:53:36,906 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 10 treesize of output 8 [2022-11-18 19:53:36,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:37,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:53:38,062 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:53:38,300 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:53:38,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:53:38,565 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:38,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-18 19:53:38,858 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:38,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 19:53:39,098 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:53:39,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 36 [2022-11-18 19:53:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:53:39,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:49,442 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_246| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_242| Int) (|v_ULTIMATE.start_main_~i~0#1_244| Int) (v_ArrVal_790 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_790))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select v_ArrVal_790 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_246| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_244| 4))))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_242| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (not (= .cse2 4)) (not (= .cse3 4)) (= (+ .cse3 .cse0 .cse1 .cse4 .cse2) (* c_~N~0 4)))))))))) is different from false [2022-11-18 19:53:52,495 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:53:52,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 906 treesize of output 1 [2022-11-18 19:53:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 15 trivial. 7 not checked. [2022-11-18 19:53:52,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762738776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:52,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:53:52,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 19] total 55 [2022-11-18 19:53:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320421052] [2022-11-18 19:53:52,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:52,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 19:53:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 19:53:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2649, Unknown=5, NotChecked=104, Total=2970 [2022-11-18 19:53:52,500 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:24,396 WARN L233 SmtUtils]: Spent 30.80s on a formula simplification. DAG size of input: 76 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:54:54,847 WARN L233 SmtUtils]: Spent 30.25s on a formula simplification. DAG size of input: 73 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:54:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:55,581 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-11-18 19:54:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:54:55,582 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 19:54:55,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:55,582 INFO L225 Difference]: With dead ends: 97 [2022-11-18 19:54:55,582 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 19:54:55,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 76.7s TimeCoverageRelationStatistics Valid=361, Invalid=4059, Unknown=6, NotChecked=130, Total=4556 [2022-11-18 19:54:55,584 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:55,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 103 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 382 Invalid, 0 Unknown, 462 Unchecked, 0.4s Time] [2022-11-18 19:54:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 19:54:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-11-18 19:54:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2022-11-18 19:54:55,605 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 45 [2022-11-18 19:54:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:55,605 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2022-11-18 19:54:55,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 55 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2022-11-18 19:54:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:54:55,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:55,607 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:55,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:55,812 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 4 times [2022-11-18 19:54:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:55,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543238128] [2022-11-18 19:54:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:55,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:55,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222090545] [2022-11-18 19:54:55,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:54:55,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:55,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:55,830 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:55,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:54:55,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:54:55,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:55,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:54:56,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:56,005 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 10 treesize of output 8 [2022-11-18 19:54:56,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:54:56,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:56,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:56,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:54:56,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-18 19:54:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:54:56,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:58,472 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_866 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_866) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 19:54:58,485 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_866 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_866) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 19:54:58,498 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_866 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_866) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 19:54:58,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:58,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:54:58,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:54:58,559 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 38 treesize of output 34 [2022-11-18 19:54:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 20 not checked. [2022-11-18 19:54:58,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543238128] [2022-11-18 19:54:58,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222090545] [2022-11-18 19:54:58,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222090545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:58,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:58,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2022-11-18 19:54:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817877290] [2022-11-18 19:54:58,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:58,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:54:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:54:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=281, Unknown=6, NotChecked=108, Total=462 [2022-11-18 19:54:58,633 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:59,245 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2022-11-18 19:54:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:54:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 19:54:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:59,247 INFO L225 Difference]: With dead ends: 155 [2022-11-18 19:54:59,247 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 19:54:59,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=93, Invalid=375, Unknown=6, NotChecked=126, Total=600 [2022-11-18 19:54:59,248 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 85 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:59,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 94 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 541 Invalid, 0 Unknown, 257 Unchecked, 0.4s Time] [2022-11-18 19:54:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 19:54:59,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 110. [2022-11-18 19:54:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 109 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2022-11-18 19:54:59,298 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 45 [2022-11-18 19:54:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:59,298 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2022-11-18 19:54:59,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2022-11-18 19:54:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:54:59,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:59,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:59,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:59,500 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:54:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 5 times [2022-11-18 19:54:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:59,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923865032] [2022-11-18 19:54:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:59,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:59,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567282301] [2022-11-18 19:54:59,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:54:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:59,518 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:59,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 19:54:59,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 19:54:59,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:54:59,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:59,805 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 10 treesize of output 8 [2022-11-18 19:54:59,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:54:59,987 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 19:54:59,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:00,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:55:00,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:55:00,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-18 19:55:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:55:00,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:00,208 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_935 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_935) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 19:55:02,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 58 treesize of output 52 [2022-11-18 19:55:02,605 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:02,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 86 treesize of output 80 [2022-11-18 19:55:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 4 not checked. [2022-11-18 19:55:02,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:02,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923865032] [2022-11-18 19:55:02,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:55:02,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567282301] [2022-11-18 19:55:02,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567282301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:02,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:02,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2022-11-18 19:55:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948277272] [2022-11-18 19:55:02,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:55:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:55:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=345, Unknown=3, NotChecked=38, Total=462 [2022-11-18 19:55:02,724 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:03,057 INFO L93 Difference]: Finished difference Result 159 states and 193 transitions. [2022-11-18 19:55:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:55:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 19:55:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:03,060 INFO L225 Difference]: With dead ends: 159 [2022-11-18 19:55:03,060 INFO L226 Difference]: Without dead ends: 147 [2022-11-18 19:55:03,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=86, Invalid=377, Unknown=3, NotChecked=40, Total=506 [2022-11-18 19:55:03,061 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 284 Invalid, 0 Unknown, 199 Unchecked, 0.2s Time] [2022-11-18 19:55:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-18 19:55:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 131. [2022-11-18 19:55:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2022-11-18 19:55:03,093 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 45 [2022-11-18 19:55:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2022-11-18 19:55:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2022-11-18 19:55:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:55:03,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:03,094 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:03,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:03,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:03,295 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1853695216, now seen corresponding path program 6 times [2022-11-18 19:55:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316607303] [2022-11-18 19:55:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:03,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:55:03,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671610268] [2022-11-18 19:55:03,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:55:03,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:03,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:03,310 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:03,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 19:55:03,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 19:55:03,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:55:03,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 19:55:03,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:03,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-11-18 19:55:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:03,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:55:03,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:03,762 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 0 case distinctions, treesize of input 46 treesize of output 29 [2022-11-18 19:55:03,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 19:55:03,938 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-11-18 19:55:03,939 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 34 treesize of output 48 [2022-11-18 19:55:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:04,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-11-18 19:55:04,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:04,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2022-11-18 19:55:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:04,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-11-18 19:55:04,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:04,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2022-11-18 19:55:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:04,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:04,523 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1010 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4))) is different from false [2022-11-18 19:55:04,534 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1010 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4))) is different from false [2022-11-18 19:55:04,747 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (or (forall ((v_ArrVal_1008 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) (forall ((v_ArrVal_1010 (Array Int Int))) (not (= 4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse0 12 |c_ULTIMATE.start_main_~a~0#1.offset|))))))) is different from false [2022-11-18 19:55:04,772 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1008 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) (forall ((v_ArrVal_1010 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)))) is different from false [2022-11-18 19:55:04,801 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_1008 (Array Int Int)) (v_ArrVal_1010 (Array Int Int)) (v_ArrVal_1007 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1007)))) (or (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4) (not (= 4 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|))))))) is different from false [2022-11-18 19:55:04,859 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int)) (v_ArrVal_1005 Int) (v_ArrVal_1010 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_315| Int) (v_ArrVal_1007 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1005) (+ (* |v_ULTIMATE.start_main_~i~0#1_315| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1007)))) (or (not (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)))) is different from false [2022-11-18 19:55:04,894 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int)) (v_ArrVal_1005 Int) (v_ArrVal_1010 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_315| Int) (v_ArrVal_1007 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) v_ArrVal_1005) (+ (* |v_ULTIMATE.start_main_~i~0#1_315| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1007)))) (or (not (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)))) is different from false [2022-11-18 19:55:06,678 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:06,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 87 [2022-11-18 19:55:07,073 INFO L321 Elim1Store]: treesize reduction 298, result has 38.0 percent of original size [2022-11-18 19:55:07,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 108 treesize of output 328 [2022-11-18 19:55:07,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 80 treesize of output 72 [2022-11-18 19:55:07,112 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 3 [2022-11-18 19:55:07,129 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 26 treesize of output 22 [2022-11-18 19:55:07,623 INFO L321 Elim1Store]: treesize reduction 261, result has 23.7 percent of original size [2022-11-18 19:55:07,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 269 treesize of output 217 [2022-11-18 19:55:07,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:07,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 130 [2022-11-18 19:55:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 32 not checked. [2022-11-18 19:55:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:08,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316607303] [2022-11-18 19:55:08,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:55:08,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671610268] [2022-11-18 19:55:08,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671610268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:08,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:08,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2022-11-18 19:55:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027885741] [2022-11-18 19:55:08,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:08,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:55:08,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:55:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1161, Unknown=15, NotChecked=532, Total=1892 [2022-11-18 19:55:08,254 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:09,298 INFO L93 Difference]: Finished difference Result 147 states and 177 transitions. [2022-11-18 19:55:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:55:09,301 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 19:55:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:09,302 INFO L225 Difference]: With dead ends: 147 [2022-11-18 19:55:09,302 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 19:55:09,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 47 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=262, Invalid=1821, Unknown=15, NotChecked=658, Total=2756 [2022-11-18 19:55:09,304 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:09,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 148 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 403 Invalid, 0 Unknown, 436 Unchecked, 0.4s Time] [2022-11-18 19:55:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 19:55:09,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-11-18 19:55:09,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 130 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2022-11-18 19:55:09,335 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 45 [2022-11-18 19:55:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:09,336 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2022-11-18 19:55:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 44 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2022-11-18 19:55:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:55:09,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:09,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:09,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:09,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:55:09,537 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:55:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1365458192, now seen corresponding path program 2 times [2022-11-18 19:55:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:09,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296447530] [2022-11-18 19:55:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:55:10,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:10,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296447530] [2022-11-18 19:55:10,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296447530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:10,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550999598] [2022-11-18 19:55:10,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:55:10,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:10,555 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:10,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 19:55:10,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:55:10,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:55:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 19:55:10,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:10,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-18 19:55:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:10,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:10,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:10,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:10,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:10,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:11,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,467 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:55:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,672 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:11,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:55:11,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:11,899 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:11,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:55:12,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:12,152 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:12,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:55:12,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:12,328 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:12,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 30 [2022-11-18 19:55:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:55:12,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:16,248 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1082 (Array Int Int)) (|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_333| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_335| Int) (|v_ULTIMATE.start_main_~i~0#1_337| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1082))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select v_ArrVal_1082 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_337| 4))))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_335| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse0 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_333| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (not (= .cse2 4)) (not (= .cse3 4)) (= (* c_~N~0 4) (+ .cse2 .cse1 .cse0 .cse3 .cse4)))))))))) is different from false [2022-11-18 19:55:18,876 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:55:18,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 906 treesize of output 1 [2022-11-18 19:55:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 15 trivial. 7 not checked. [2022-11-18 19:55:18,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550999598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:18,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:18,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 19] total 50 [2022-11-18 19:55:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688377172] [2022-11-18 19:55:18,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 19:55:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:18,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 19:55:18,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2153, Unknown=5, NotChecked=94, Total=2450 [2022-11-18 19:55:18,886 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 50 states, 50 states have (on average 2.06) internal successors, (103), 50 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:26,044 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 85 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:55:32,385 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 84 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:55:38,982 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 88 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:24,671 WARN L233 SmtUtils]: Spent 45.26s on a formula simplification. DAG size of input: 88 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:32,029 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 74 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:42,588 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 80 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:50,903 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 88 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:57:07,741 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 68 DAG size of output: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:57:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:10,146 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2022-11-18 19:57:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 19:57:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 50 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 19:57:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:10,148 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:57:10,148 INFO L226 Difference]: Without dead ends: 160 [2022-11-18 19:57:10,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 116.9s TimeCoverageRelationStatistics Valid=622, Invalid=4925, Unknown=7, NotChecked=146, Total=5700 [2022-11-18 19:57:10,151 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 120 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 887 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:10,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 139 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 280 Invalid, 0 Unknown, 887 Unchecked, 0.3s Time] [2022-11-18 19:57:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-18 19:57:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 141. [2022-11-18 19:57:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.2142857142857142) internal successors, (170), 140 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 170 transitions. [2022-11-18 19:57:10,203 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 170 transitions. Word has length 45 [2022-11-18 19:57:10,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:10,203 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 170 transitions. [2022-11-18 19:57:10,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.06) internal successors, (103), 50 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 170 transitions. [2022-11-18 19:57:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 19:57:10,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:10,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:10,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:10,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:57:10,404 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2022-11-18 19:57:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519089699] [2022-11-18 19:57:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:57:10,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519089699] [2022-11-18 19:57:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519089699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527196663] [2022-11-18 19:57:10,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:57:10,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:10,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:10,635 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:10,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 19:57:10,903 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:57:10,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:10,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:57:10,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:57:11,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:57:11,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527196663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:11,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:11,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:57:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483101988] [2022-11-18 19:57:11,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:57:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:57:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:57:11,298 INFO L87 Difference]: Start difference. First operand 141 states and 170 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:11,848 INFO L93 Difference]: Finished difference Result 162 states and 196 transitions. [2022-11-18 19:57:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:57:11,848 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 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 47 [2022-11-18 19:57:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:11,849 INFO L225 Difference]: With dead ends: 162 [2022-11-18 19:57:11,849 INFO L226 Difference]: Without dead ends: 143 [2022-11-18 19:57:11,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:57:11,851 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:11,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 34 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-18 19:57:11,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2022-11-18 19:57:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-11-18 19:57:11,879 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 47 [2022-11-18 19:57:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:11,879 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-11-18 19:57:11,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:11,880 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-11-18 19:57:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 19:57:11,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:11,880 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:11,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:12,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:57:12,081 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2022-11-18 19:57:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:12,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153631075] [2022-11-18 19:57:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:12,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:57:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153631075] [2022-11-18 19:57:12,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153631075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:12,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247011287] [2022-11-18 19:57:12,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:57:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:12,322 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:12,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 19:57:12,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 19:57:12,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:12,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:57:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:57:12,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:57:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247011287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:12,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-18 19:57:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656539798] [2022-11-18 19:57:12,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:57:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:57:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:57:12,848 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:13,167 INFO L93 Difference]: Finished difference Result 151 states and 182 transitions. [2022-11-18 19:57:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:57:13,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 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 48 [2022-11-18 19:57:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:13,168 INFO L225 Difference]: With dead ends: 151 [2022-11-18 19:57:13,168 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 19:57:13,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:57:13,169 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 141 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:13,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 23 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 19:57:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2022-11-18 19:57:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-11-18 19:57:13,196 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 48 [2022-11-18 19:57:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:13,196 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-11-18 19:57:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-11-18 19:57:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:57:13,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:13,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:13,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:13,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:13,399 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2022-11-18 19:57:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13798431] [2022-11-18 19:57:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:57:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:16,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13798431] [2022-11-18 19:57:16,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13798431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:16,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435055147] [2022-11-18 19:57:16,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:57:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:16,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 19:57:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:16,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 19:57:16,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:16,468 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 10 treesize of output 8 [2022-11-18 19:57:16,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:16,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:16,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:16,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:16,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:16,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:17,416 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:57:17,644 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:17,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:57:17,917 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:17,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:57:18,187 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:18,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 19:57:18,465 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:18,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:57:18,635 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:18,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2022-11-18 19:57:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:57:18,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:34,730 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_410| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_408| Int) (|v_ULTIMATE.start_main_~i~0#1_404| Int) (v_ArrVal_1309 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_406| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1309))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1309 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_410| 4))))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_408| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_406| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0 .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_404| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (= (+ .cse2 .cse0 .cse1 .cse3 .cse4 .cse5) (* c_~N~0 4)) (not (= .cse3 4)) (not (= .cse5 4)) (not (= .cse2 4))))))))))) is different from false [2022-11-18 19:57:40,141 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:57:40,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 1901 treesize of output 1 [2022-11-18 19:57:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 26 trivial. 9 not checked. [2022-11-18 19:57:40,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435055147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:40,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:40,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 22] total 66 [2022-11-18 19:57:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872018562] [2022-11-18 19:57:40,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:40,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-18 19:57:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-18 19:57:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=3899, Unknown=7, NotChecked=126, Total=4290 [2022-11-18 19:57:40,149 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 66 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 66 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:49,862 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 98 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:57:51,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:51,439 INFO L93 Difference]: Finished difference Result 143 states and 172 transitions. [2022-11-18 19:57:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:57:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 66 states have internal predecessors, (114), 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 53 [2022-11-18 19:57:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:51,441 INFO L225 Difference]: With dead ends: 143 [2022-11-18 19:57:51,441 INFO L226 Difference]: Without dead ends: 139 [2022-11-18 19:57:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=507, Invalid=6799, Unknown=8, NotChecked=168, Total=7482 [2022-11-18 19:57:51,443 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1088 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:51,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 145 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 491 Invalid, 0 Unknown, 1088 Unchecked, 0.6s Time] [2022-11-18 19:57:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-18 19:57:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2022-11-18 19:57:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.218487394957983) internal successors, (145), 119 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2022-11-18 19:57:51,484 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 53 [2022-11-18 19:57:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2022-11-18 19:57:51,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 66 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2022-11-18 19:57:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:57:51,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:51,486 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:51,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-18 19:57:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 19:57:51,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:57:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 720372683, now seen corresponding path program 7 times [2022-11-18 19:57:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:51,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613666523] [2022-11-18 19:57:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:51,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:51,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:57:51,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080825046] [2022-11-18 19:57:51,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:57:51,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:51,709 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:51,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 19:57:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:51,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 19:57:51,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:51,897 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 10 treesize of output 8 [2022-11-18 19:57:52,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 19:57:52,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:52,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:52,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:52,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:52,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:57:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 85 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:57:52,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:52,558 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1400 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1400) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 19:57:52,706 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1400 (Array Int Int))) (= 4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1400) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 19:57:52,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:52,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 19:57:52,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:52,777 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 38 treesize of output 34 [2022-11-18 19:57:52,789 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 3 [2022-11-18 19:57:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 17 not checked. [2022-11-18 19:57:59,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:59,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613666523] [2022-11-18 19:57:59,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:57:59,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080825046] [2022-11-18 19:57:59,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080825046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:59,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:59,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-18 19:57:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617808017] [2022-11-18 19:57:59,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:59,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:57:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:57:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=695, Unknown=7, NotChecked=110, Total=930 [2022-11-18 19:57:59,042 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:59,867 INFO L93 Difference]: Finished difference Result 169 states and 209 transitions. [2022-11-18 19:57:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:57:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 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 53 [2022-11-18 19:57:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:59,869 INFO L225 Difference]: With dead ends: 169 [2022-11-18 19:57:59,869 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 19:57:59,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=138, Invalid=793, Unknown=7, NotChecked=118, Total=1056 [2022-11-18 19:57:59,870 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 487 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:59,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 87 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 863 Invalid, 0 Unknown, 487 Unchecked, 0.6s Time] [2022-11-18 19:57:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 19:57:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 144. [2022-11-18 19:57:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2307692307692308) internal successors, (176), 143 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 176 transitions. [2022-11-18 19:57:59,916 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 176 transitions. Word has length 53 [2022-11-18 19:57:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:59,916 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 176 transitions. [2022-11-18 19:57:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.838709677419355) internal successors, (88), 31 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 176 transitions. [2022-11-18 19:57:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:57:59,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:59,917 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:59,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-18 19:58:00,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:58:00,122 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1343172751, now seen corresponding path program 8 times [2022-11-18 19:58:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:00,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529127786] [2022-11-18 19:58:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:00,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447279370] [2022-11-18 19:58:00,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:58:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:00,138 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:00,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 19:58:00,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:58:00,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:00,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:58:00,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:00,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 17 [2022-11-18 19:58:00,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:00,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:00,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:00,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:00,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:00,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:00,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:00,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:58:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:58:00,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:00,941 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1481 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1481) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 19:58:00,951 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1481 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1481) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 19:58:01,039 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1481 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1481) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 19:58:03,661 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-18 19:58:03,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-18 19:58:03,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:03,669 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 38 treesize of output 34 [2022-11-18 19:58:03,673 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 3 [2022-11-18 19:58:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 27 trivial. 21 not checked. [2022-11-18 19:58:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:05,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529127786] [2022-11-18 19:58:05,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:05,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447279370] [2022-11-18 19:58:05,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447279370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:05,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:05,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-18 19:58:05,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22443226] [2022-11-18 19:58:05,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:05,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:58:05,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:58:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=637, Unknown=9, NotChecked=162, Total=930 [2022-11-18 19:58:05,884 INFO L87 Difference]: Start difference. First operand 144 states and 176 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:11,626 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2022-11-18 19:58:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:58:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 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 53 [2022-11-18 19:58:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:11,627 INFO L225 Difference]: With dead ends: 213 [2022-11-18 19:58:11,628 INFO L226 Difference]: Without dead ends: 201 [2022-11-18 19:58:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=153, Invalid=776, Unknown=13, NotChecked=180, Total=1122 [2022-11-18 19:58:11,629 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 104 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 101 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 570 Invalid, 0 Unknown, 364 Unchecked, 0.4s Time] [2022-11-18 19:58:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-18 19:58:11,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 179. [2022-11-18 19:58:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2359550561797752) internal successors, (220), 178 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 220 transitions. [2022-11-18 19:58:11,686 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 220 transitions. Word has length 53 [2022-11-18 19:58:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:11,687 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 220 transitions. [2022-11-18 19:58:11,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 220 transitions. [2022-11-18 19:58:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:58:11,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:11,688 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:11,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-11-18 19:58:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:58:11,893 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash -616749297, now seen corresponding path program 9 times [2022-11-18 19:58:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:11,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391925674] [2022-11-18 19:58:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:11,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:58:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426312343] [2022-11-18 19:58:11,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:58:11,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:11,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:11,912 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:11,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 19:58:12,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:58:12,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:12,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:58:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:12,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 17 [2022-11-18 19:58:12,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:12,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:12,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:12,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:12,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:12,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:12,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 19:58:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:58:12,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:12,603 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1564 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1564) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 19:58:29,121 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1561 Int) (|v_ULTIMATE.start_main_~i~0#1_495| Int) (v_ArrVal_1563 Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (v_ArrVal_1564 (Array Int Int)) (v_ArrVal_1558 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_496| 1) |v_ULTIMATE.start_main_~i~0#1_495|)) (= 4 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1558) (+ (* |v_ULTIMATE.start_main_~i~0#1_496| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1561) (+ (* |v_ULTIMATE.start_main_~i~0#1_495| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1563)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1564) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_496|)))) is different from false [2022-11-18 19:58:31,164 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_497| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_497|)) (forall ((v_ArrVal_1561 Int) (|v_ULTIMATE.start_main_~i~0#1_495| Int) (v_ArrVal_1563 Int) (|v_ULTIMATE.start_main_~i~0#1_496| Int) (v_ArrVal_1564 (Array Int Int)) (v_ArrVal_1558 Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_496| 1) |v_ULTIMATE.start_main_~i~0#1_495|)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_497| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1558) (+ (* |v_ULTIMATE.start_main_~i~0#1_496| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1561) (+ (* |v_ULTIMATE.start_main_~i~0#1_495| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1563)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1564) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_497| 1) |v_ULTIMATE.start_main_~i~0#1_496|)))))) is different from false [2022-11-18 19:58:33,325 INFO L321 Elim1Store]: treesize reduction 203, result has 20.1 percent of original size [2022-11-18 19:58:33,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 67 [2022-11-18 19:58:33,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:33,334 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 38 treesize of output 34 [2022-11-18 19:58:33,345 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 3 [2022-11-18 19:58:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 15 not checked. [2022-11-18 19:58:35,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391925674] [2022-11-18 19:58:35,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:58:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426312343] [2022-11-18 19:58:35,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426312343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:35,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:35,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 29 [2022-11-18 19:58:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339775182] [2022-11-18 19:58:35,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:58:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:58:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=507, Unknown=21, NotChecked=150, Total=812 [2022-11-18 19:58:35,443 INFO L87 Difference]: Start difference. First operand 179 states and 220 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:36,011 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2022-11-18 19:58:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:58:36,011 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-18 19:58:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:36,012 INFO L225 Difference]: With dead ends: 236 [2022-11-18 19:58:36,013 INFO L226 Difference]: Without dead ends: 206 [2022-11-18 19:58:36,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=148, Invalid=545, Unknown=21, NotChecked=156, Total=870 [2022-11-18 19:58:36,014 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 137 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:36,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 73 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 325 Invalid, 0 Unknown, 292 Unchecked, 0.3s Time] [2022-11-18 19:58:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-18 19:58:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 187. [2022-11-18 19:58:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 186 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2022-11-18 19:58:36,099 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 53 [2022-11-18 19:58:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:36,099 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2022-11-18 19:58:36,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2022-11-18 19:58:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:58:36,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:36,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:36,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:36,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:58:36,306 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1142323953, now seen corresponding path program 3 times [2022-11-18 19:58:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:36,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2778772] [2022-11-18 19:58:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:39,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2778772] [2022-11-18 19:58:39,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2778772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:39,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98475123] [2022-11-18 19:58:39,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:58:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:39,684 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:39,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 19:58:39,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:58:39,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 19:58:39,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:40,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2022-11-18 19:58:40,407 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-18 19:58:40,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-18 19:58:40,533 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:58:40,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-18 19:58:40,768 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:58:40,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 19:58:41,094 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:58:41,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 54 treesize of output 61 [2022-11-18 19:58:41,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:41,369 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 23 treesize of output 19 [2022-11-18 19:58:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:58:41,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:43,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 16 [2022-11-18 19:58:43,021 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 26 treesize of output 20 [2022-11-18 19:58:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 27 proven. 17 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:58:43,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98475123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:43,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:58:43,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 13] total 61 [2022-11-18 19:58:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591410198] [2022-11-18 19:58:43,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:43,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 19:58:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 19:58:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=3300, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:58:43,029 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 61 states, 61 states have (on average 1.721311475409836) internal successors, (105), 61 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:45,943 INFO L93 Difference]: Finished difference Result 216 states and 259 transitions. [2022-11-18 19:58:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 19:58:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.721311475409836) internal successors, (105), 61 states have internal predecessors, (105), 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 53 [2022-11-18 19:58:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:45,945 INFO L225 Difference]: With dead ends: 216 [2022-11-18 19:58:45,945 INFO L226 Difference]: Without dead ends: 183 [2022-11-18 19:58:45,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=887, Invalid=7485, Unknown=0, NotChecked=0, Total=8372 [2022-11-18 19:58:45,947 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:45,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 307 Invalid, 0 Unknown, 128 Unchecked, 0.3s Time] [2022-11-18 19:58:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-18 19:58:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2022-11-18 19:58:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.196629213483146) internal successors, (213), 178 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 213 transitions. [2022-11-18 19:58:46,035 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 213 transitions. Word has length 53 [2022-11-18 19:58:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:46,036 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 213 transitions. [2022-11-18 19:58:46,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.721311475409836) internal successors, (105), 61 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 213 transitions. [2022-11-18 19:58:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:58:46,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:46,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:46,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:46,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:46,243 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:58:46,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 725153995, now seen corresponding path program 4 times [2022-11-18 19:58:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:46,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499073366] [2022-11-18 19:58:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:58:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:47,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499073366] [2022-11-18 19:58:47,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499073366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935642604] [2022-11-18 19:58:47,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:58:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:47,016 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:47,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 19:58:47,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:58:47,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:47,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:58:47,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:47,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2022-11-18 19:58:47,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 27 [2022-11-18 19:58:47,408 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:58:47,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 28 treesize of output 37 [2022-11-18 19:58:47,555 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:58:47,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-18 19:58:47,677 INFO L321 Elim1Store]: treesize reduction 24, result has 47.8 percent of original size [2022-11-18 19:58:47,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 43 treesize of output 52 [2022-11-18 19:58:47,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:47,723 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 39 treesize of output 36 [2022-11-18 19:58:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 32 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 19:58:47,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 32 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 19:59:07,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935642604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:07,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 36 [2022-11-18 19:59:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919205805] [2022-11-18 19:59:07,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:59:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:59:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1072, Unknown=4, NotChecked=0, Total=1260 [2022-11-18 19:59:07,395 INFO L87 Difference]: Start difference. First operand 179 states and 213 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:08,798 INFO L93 Difference]: Finished difference Result 207 states and 248 transitions. [2022-11-18 19:59:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:59:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 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 53 [2022-11-18 19:59:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:08,800 INFO L225 Difference]: With dead ends: 207 [2022-11-18 19:59:08,800 INFO L226 Difference]: Without dead ends: 171 [2022-11-18 19:59:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 85 SyntacticMatches, 12 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=551, Invalid=2985, Unknown=4, NotChecked=0, Total=3540 [2022-11-18 19:59:08,801 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:08,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 217 Invalid, 0 Unknown, 140 Unchecked, 0.2s Time] [2022-11-18 19:59:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-18 19:59:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2022-11-18 19:59:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.1829268292682926) internal successors, (194), 164 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 194 transitions. [2022-11-18 19:59:08,879 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 194 transitions. Word has length 53 [2022-11-18 19:59:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:08,879 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 194 transitions. [2022-11-18 19:59:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 194 transitions. [2022-11-18 19:59:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 19:59:08,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:08,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:08,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 19:59:09,087 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:59:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1080284339, now seen corresponding path program 5 times [2022-11-18 19:59:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:09,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495629637] [2022-11-18 19:59:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 19:59:09,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495629637] [2022-11-18 19:59:09,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495629637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:09,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800647620] [2022-11-18 19:59:09,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:59:09,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:09,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:09,821 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 19:59:10,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-18 19:59:10,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:10,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:59:10,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:10,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2022-11-18 19:59:10,452 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 19:59:10,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:59:10,517 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 19:59:10,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:59:10,563 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 19:59:10,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:59:10,612 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-18 19:59:10,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:59:10,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-18 19:59:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 19:59:10,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:10,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 21 [2022-11-18 19:59:10,982 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 122 treesize of output 114 [2022-11-18 19:59:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 19:59:11,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800647620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:11,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:11,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2022-11-18 19:59:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770303220] [2022-11-18 19:59:11,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 19:59:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 19:59:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:59:11,038 INFO L87 Difference]: Start difference. First operand 165 states and 194 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:11,760 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2022-11-18 19:59:11,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:59:11,761 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 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 53 [2022-11-18 19:59:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:11,762 INFO L225 Difference]: With dead ends: 198 [2022-11-18 19:59:11,762 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 19:59:11,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:59:11,763 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:11,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 103 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 675 Invalid, 0 Unknown, 55 Unchecked, 0.5s Time] [2022-11-18 19:59:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 19:59:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2022-11-18 19:59:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.170731707317073) internal successors, (192), 164 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2022-11-18 19:59:11,812 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 53 [2022-11-18 19:59:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:11,812 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2022-11-18 19:59:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,813 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2022-11-18 19:59:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 19:59:11,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:11,814 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:11,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-18 19:59:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-18 19:59:12,020 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:59:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 783767503, now seen corresponding path program 14 times [2022-11-18 19:59:12,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:12,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622793140] [2022-11-18 19:59:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:59:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:12,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622793140] [2022-11-18 19:59:12,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622793140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:12,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544016677] [2022-11-18 19:59:12,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:12,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:12,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:12,316 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:12,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 19:59:12,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:12,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:12,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:59:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:59:12,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:59:12,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544016677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:12,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:12,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-18 19:59:12,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783441758] [2022-11-18 19:59:12,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:12,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:59:12,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:59:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:59:12,858 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:13,597 INFO L93 Difference]: Finished difference Result 192 states and 224 transitions. [2022-11-18 19:59:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:59:13,597 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-18 19:59:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:13,598 INFO L225 Difference]: With dead ends: 192 [2022-11-18 19:59:13,598 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:59:13,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:59:13,599 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 144 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:13,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 34 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:59:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:59:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 123. [2022-11-18 19:59:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 122 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2022-11-18 19:59:13,651 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 55 [2022-11-18 19:59:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:13,652 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2022-11-18 19:59:13,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2022-11-18 19:59:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:59:13,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:13,652 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:13,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:13,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:13,853 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:59:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -469998324, now seen corresponding path program 15 times [2022-11-18 19:59:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520504700] [2022-11-18 19:59:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 19:59:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:14,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520504700] [2022-11-18 19:59:14,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520504700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:14,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638833989] [2022-11-18 19:59:14,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:59:14,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:14,131 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:14,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 19:59:14,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 19:59:14,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:59:14,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:59:14,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 19:59:14,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638833989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:14,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:59:14,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-11-18 19:59:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881246494] [2022-11-18 19:59:14,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:59:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:59:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:59:14,891 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:15,332 INFO L93 Difference]: Finished difference Result 192 states and 227 transitions. [2022-11-18 19:59:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:59:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 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 56 [2022-11-18 19:59:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:15,333 INFO L225 Difference]: With dead ends: 192 [2022-11-18 19:59:15,333 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:59:15,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:59:15,334 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 152 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:15,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 35 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:59:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:59:15,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2022-11-18 19:59:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 90 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-11-18 19:59:15,373 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 56 [2022-11-18 19:59:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:15,374 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-11-18 19:59:15,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-11-18 19:59:15,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 19:59:15,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:15,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:15,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:15,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:15,581 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:59:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -844503370, now seen corresponding path program 16 times [2022-11-18 19:59:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:15,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91504453] [2022-11-18 19:59:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:15,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 19:59:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91504453] [2022-11-18 19:59:18,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91504453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:18,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000350031] [2022-11-18 19:59:18,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:59:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:18,799 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:18,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 19:59:19,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:59:19,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:19,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 19:59:19,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:19,047 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 10 treesize of output 8 [2022-11-18 19:59:19,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:19,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:19,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:59:20,076 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 19:59:20,325 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:59:20,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 19:59:20,644 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:59:20,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-18 19:59:20,962 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:59:20,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2022-11-18 19:59:21,287 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 19:59:21,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 19:59:21,618 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:59:21,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 19:59:21,864 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:59:21,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 39 [2022-11-18 19:59:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 19:59:21,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:01,348 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_644| Int) (|v_ULTIMATE.start_main_~i~0#1_640| Int) (|v_ULTIMATE.start_main_~i~0#1_638| Int) (|v_ULTIMATE.start_main_~i~0#1_646| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse5 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse5 .cse1 .cse3 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (not (= .cse2 4)) (not (= 4 .cse3)) (not (= .cse4 4)) (not (= .cse5 4)) (= (* c_~N~0 4) (+ .cse0 .cse2 .cse5 .cse1 .cse4 .cse3 .cse6)))))))))))) is different from false [2022-11-18 20:00:06,830 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse4 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (not (= .cse0 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse0 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse1 .cse0 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse2 4)) (< (+ .cse3 .cse1 .cse0 .cse4 .cse2 .cse5 .cse6) (+ 5 .cse7)))))))) (not (= .cse3 4))))) (not (= 4 .cse6))))))))))) (not (= .cse4 4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse10 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (not (= .cse10 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse11 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse11 .cse14 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse12 4)) (< (+ .cse7 3) (+ .cse13 .cse11 .cse14 .cse10 .cse12 .cse15 .cse16)))))))) (not (= .cse13 4))))) (not (= 4 .cse16))))) (not (= .cse14 4))))))))))))) is different from false [2022-11-18 20:00:07,144 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse3 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse0 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2 .cse3 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (+ .cse7 9)) (not (= .cse4 4))))))))))) (not (= 4 .cse6))))) (not (= .cse2 4)))))))) (not (= .cse3 4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse14 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (not (= .cse10 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse14 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (not (= 4 .cse11)) (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse14 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse10 .cse14 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse12 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse15 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse10 .cse14 .cse16 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ 7 .cse7) (+ .cse13 .cse12 .cse10 .cse14 .cse15 .cse16 .cse11)) (not (= .cse15 4)))))))) (not (= .cse13 4)))))))))))))) (not (= .cse14 4))))))) is different from false [2022-11-18 20:00:07,749 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse0 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (not (= .cse0 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse2 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse4 .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse3 4)) (< (+ .cse1 .cse2 .cse4 .cse0 .cse3 .cse5 .cse6) (+ .cse7 13))))))))))) (not (= 4 .cse6))))) (not (= .cse4 4))))))))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse10 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (not (= .cse10 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (not (= .cse11 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse10 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse11 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse12 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12 .cse11 .cse10 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ .cse7 11) (+ .cse13 .cse12 .cse11 .cse10 .cse14 .cse15 .cse16)) (not (= .cse14 4)))))))) (not (= .cse13 4))))) (not (= 4 .cse16)))))))))))))))) is different from false [2022-11-18 20:00:08,273 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse4 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse0 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse2 4)) (< (+ .cse0 .cse1 .cse3 .cse4 .cse2 .cse5 .cse6) (+ .cse7 17))))))))))) (not (= 4 .cse6))))) (not (= .cse3 4)))))))) (not (= .cse4 4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse15 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (not (= 4 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse15 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse15 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse11 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse11 .cse14 .cse15 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse12 4)) (< (+ .cse7 15) (+ .cse13 .cse11 .cse14 .cse15 .cse12 .cse16 .cse10)))))))) (not (= .cse13 4)))))))) (not (= .cse14 4)))))))) (not (= .cse15 4))))))) is different from false [2022-11-18 20:00:08,823 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse4 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse6 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse0 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3 .cse4 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (not (= .cse2 4)) (< (+ .cse0 .cse1 .cse3 .cse4 .cse2 .cse5 .cse6) (+ .cse7 21))))))))))) (not (= 4 .cse6))))) (not (= .cse3 4)))))))) (not (= .cse4 4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse13 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse10 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12 .cse13 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse11 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse14 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse12 .cse13 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ 19 .cse7) (+ .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16)) (not (= .cse14 4))))))))))) (not (= 4 .cse16))))) (not (= .cse12 4)))))))) (not (= .cse13 4))))))) is different from false [2022-11-18 20:00:09,411 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse4 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse6 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (not (= 4 .cse0)) (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse6 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse1 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse2 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse6 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse2 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4 .cse6 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse0) (+ .cse7 25)) (not (= .cse5 4)))))))))))))) (not (= .cse3 4)))))))) (not (= .cse4 4))))) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_656| Int) (v_ArrVal_2073 (Array Int Int))) (let ((.cse14 (select v_ArrVal_2073 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_656| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_646| Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2073))) (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse13 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_646| 4))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_644| Int)) (let ((.cse10 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_644| 4))))) (or (not (= 4 .cse10)) (forall ((|v_ULTIMATE.start_main_~i~0#1_642| Int)) (let ((.cse11 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_642| 4))))) (or (not (= .cse11 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_640| Int)) (let ((.cse12 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse13 .cse14 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_640| 4))))) (or (not (= .cse12 4)) (forall ((|v_ULTIMATE.start_main_~i~0#1_638| Int)) (let ((.cse15 (select (select (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12 .cse13 .cse14 .cse16 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_638| 4))))) (or (< (+ 23 .cse7) (+ .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse10)) (not (= .cse15 4)))))))))))))) (not (= .cse13 4)))))))) (not (= .cse14 4))))))) is different from false [2022-11-18 20:00:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 47 not checked. [2022-11-18 20:00:09,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000350031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:09,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:00:09,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 25] total 74 [2022-11-18 20:00:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795302749] [2022-11-18 20:00:09,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-11-18 20:00:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-11-18 20:00:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=4180, Unknown=25, NotChecked=952, Total=5402 [2022-11-18 20:00:09,768 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:00,029 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2022-11-18 20:01:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:01:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-18 20:01:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:00,030 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:01:00,031 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 20:01:00,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 82 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 92.5s TimeCoverageRelationStatistics Valid=342, Invalid=5505, Unknown=33, NotChecked=1092, Total=6972 [2022-11-18 20:01:00,032 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1284 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:00,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 251 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 599 Invalid, 0 Unknown, 1284 Unchecked, 0.9s Time] [2022-11-18 20:01:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 20:01:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 146. [2022-11-18 20:01:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.193103448275862) internal successors, (173), 145 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2022-11-18 20:01:00,093 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 61 [2022-11-18 20:01:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:00,093 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2022-11-18 20:01:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 74 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2022-11-18 20:01:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:01:00,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:00,094 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:00,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-11-18 20:01:00,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 20:01:00,294 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash -787245068, now seen corresponding path program 10 times [2022-11-18 20:01:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:00,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885181020] [2022-11-18 20:01:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:00,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:00,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786453335] [2022-11-18 20:01:00,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:01:00,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:00,312 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:00,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 20:01:00,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:01:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:00,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:01:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:00,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 15 [2022-11-18 20:01:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:01,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:01,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:01,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:01,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:01:01,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:01:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 91 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:01:01,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:02,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:02,157 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 96 treesize of output 84 [2022-11-18 20:01:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 91 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:01:02,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:02,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885181020] [2022-11-18 20:01:02,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:02,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786453335] [2022-11-18 20:01:02,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786453335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:02,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:02,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2022-11-18 20:01:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332446917] [2022-11-18 20:01:02,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:02,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:01:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:02,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:01:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:01:02,665 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:04,069 INFO L93 Difference]: Finished difference Result 189 states and 227 transitions. [2022-11-18 20:01:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:01:04,069 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 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 61 [2022-11-18 20:01:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:04,071 INFO L225 Difference]: With dead ends: 189 [2022-11-18 20:01:04,071 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 20:01:04,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:01:04,071 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 131 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 521 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:04,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 124 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1102 Invalid, 0 Unknown, 521 Unchecked, 1.2s Time] [2022-11-18 20:01:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 20:01:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2022-11-18 20:01:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 157 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 187 transitions. [2022-11-18 20:01:04,143 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 187 transitions. Word has length 61 [2022-11-18 20:01:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 187 transitions. [2022-11-18 20:01:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.5555555555555554) internal successors, (92), 36 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 187 transitions. [2022-11-18 20:01:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:01:04,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:04,145 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:04,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:01:04,351 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash -164445000, now seen corresponding path program 11 times [2022-11-18 20:01:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:04,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690776838] [2022-11-18 20:01:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:04,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:04,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146122317] [2022-11-18 20:01:04,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:01:04,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:04,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:04,369 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:04,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 20:01:06,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 20:01:06,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:06,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 20:01:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:06,361 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 10 treesize of output 8 [2022-11-18 20:01:06,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 20:01:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:06,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:06,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:06,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:07,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:07,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:07,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:01:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-18 20:01:07,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:07,295 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2279 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 20:01:07,368 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2279 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:01:07,383 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2279 (Array Int Int))) (= 4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2279) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2022-11-18 20:01:07,791 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-18 20:01:07,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-18 20:01:07,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:07,814 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 38 treesize of output 34 [2022-11-18 20:01:07,818 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 3 [2022-11-18 20:01:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 54 refuted. 0 times theorem prover too weak. 38 trivial. 23 not checked. [2022-11-18 20:01:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:01:10,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690776838] [2022-11-18 20:01:10,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:01:10,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146122317] [2022-11-18 20:01:10,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146122317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:01:10,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:10,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2022-11-18 20:01:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981460878] [2022-11-18 20:01:10,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:01:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:01:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:01:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=841, Unknown=13, NotChecked=186, Total=1190 [2022-11-18 20:01:10,163 INFO L87 Difference]: Start difference. First operand 158 states and 187 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:11,347 INFO L93 Difference]: Finished difference Result 224 states and 269 transitions. [2022-11-18 20:01:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:01:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 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 61 [2022-11-18 20:01:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:11,349 INFO L225 Difference]: With dead ends: 224 [2022-11-18 20:01:11,349 INFO L226 Difference]: Without dead ends: 212 [2022-11-18 20:01:11,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 87 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=185, Invalid=1004, Unknown=13, NotChecked=204, Total=1406 [2022-11-18 20:01:11,350 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 162 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:11,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 82 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 576 Invalid, 0 Unknown, 369 Unchecked, 0.6s Time] [2022-11-18 20:01:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-18 20:01:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 191. [2022-11-18 20:01:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.1894736842105262) internal successors, (226), 190 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2022-11-18 20:01:11,425 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 61 [2022-11-18 20:01:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:11,426 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2022-11-18 20:01:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:01:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2022-11-18 20:01:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:01:11,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:11,427 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:11,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:01:11,638 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:01:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2124367048, now seen corresponding path program 12 times [2022-11-18 20:01:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:01:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446976080] [2022-11-18 20:01:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:01:11,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:01:11,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958763275] [2022-11-18 20:01:11,656 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:01:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:01:11,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:01:11,657 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:01:11,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:01:12,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 20:01:12,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:01:12,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:01:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:12,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 17 [2022-11-18 20:01:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:12,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:12,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:12,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:12,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:01:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:12,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:01:13,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:01:13,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:13,102 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 21 treesize of output 17 [2022-11-18 20:01:13,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2022-11-18 20:01:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 9 proven. 113 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:01:13,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:13,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 12 treesize of output 4 [2022-11-18 20:02:31,570 INFO L321 Elim1Store]: treesize reduction 203, result has 20.1 percent of original size [2022-11-18 20:02:31,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 70 [2022-11-18 20:02:31,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:02:31,592 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 44 treesize of output 41 [2022-11-18 20:02:31,599 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 14 treesize of output 7 [2022-11-18 20:02:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 73 refuted. 16 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:02:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:02:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446976080] [2022-11-18 20:02:53,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:02:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958763275] [2022-11-18 20:02:53,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958763275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:02:53,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:53,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 52 [2022-11-18 20:02:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869207546] [2022-11-18 20:02:53,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 20:02:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:02:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 20:02:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2197, Unknown=45, NotChecked=0, Total=2652 [2022-11-18 20:02:53,786 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 52 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:10,037 INFO L93 Difference]: Finished difference Result 259 states and 306 transitions. [2022-11-18 20:03:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:03:10,037 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 52 states have internal predecessors, (99), 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 61 [2022-11-18 20:03:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:10,038 INFO L225 Difference]: With dead ends: 259 [2022-11-18 20:03:10,038 INFO L226 Difference]: Without dead ends: 229 [2022-11-18 20:03:10,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 115.7s TimeCoverageRelationStatistics Valid=819, Invalid=3687, Unknown=50, NotChecked=0, Total=4556 [2022-11-18 20:03:10,040 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 156 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:10,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 121 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 368 Invalid, 0 Unknown, 409 Unchecked, 0.6s Time] [2022-11-18 20:03:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-18 20:03:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 197. [2022-11-18 20:03:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.163265306122449) internal successors, (228), 196 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 228 transitions. [2022-11-18 20:03:10,139 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 228 transitions. Word has length 61 [2022-11-18 20:03:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:10,139 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 228 transitions. [2022-11-18 20:03:10,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 52 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 228 transitions. [2022-11-18 20:03:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:03:10,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:10,140 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:10,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:03:10,341 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 603739638, now seen corresponding path program 6 times [2022-11-18 20:03:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:10,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157409138] [2022-11-18 20:03:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:10,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 73 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:12,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:12,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157409138] [2022-11-18 20:03:12,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157409138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:12,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498197178] [2022-11-18 20:03:12,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:03:12,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:12,191 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:12,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:03:12,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-18 20:03:12,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:12,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:03:12,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:12,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2022-11-18 20:03:12,834 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 20:03:12,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-18 20:03:13,128 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 20:03:13,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 20:03:13,312 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 20:03:13,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 20:03:13,494 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 20:03:13,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-18 20:03:13,665 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 20:03:13,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 40 treesize of output 47 [2022-11-18 20:03:13,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:03:13,723 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 23 treesize of output 19 [2022-11-18 20:03:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 20:03:13,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 33 proven. 29 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 20:03:28,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498197178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:28,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:28,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 14] total 41 [2022-11-18 20:03:28,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536057165] [2022-11-18 20:03:28,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:03:28,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:03:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1442, Unknown=4, NotChecked=0, Total=1640 [2022-11-18 20:03:28,635 INFO L87 Difference]: Start difference. First operand 197 states and 228 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:31,500 INFO L93 Difference]: Finished difference Result 235 states and 277 transitions. [2022-11-18 20:03:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:03:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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 61 [2022-11-18 20:03:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:31,502 INFO L225 Difference]: With dead ends: 235 [2022-11-18 20:03:31,502 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 20:03:31,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 100 SyntacticMatches, 8 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=704, Invalid=4548, Unknown=4, NotChecked=0, Total=5256 [2022-11-18 20:03:31,503 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:31,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 59 Unchecked, 0.3s Time] [2022-11-18 20:03:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 20:03:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2022-11-18 20:03:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 199 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2022-11-18 20:03:31,634 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 61 [2022-11-18 20:03:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:31,634 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2022-11-18 20:03:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2022-11-18 20:03:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:03:31,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:31,635 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:31,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:31,842 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1549104648, now seen corresponding path program 17 times [2022-11-18 20:03:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:31,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547720561] [2022-11-18 20:03:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547720561] [2022-11-18 20:03:32,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547720561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975945311] [2022-11-18 20:03:32,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:03:32,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:32,337 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:32,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:03:33,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:03:33,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:33,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:03:33,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:33,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:33,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975945311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:33,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:33,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-11-18 20:03:33,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984284927] [2022-11-18 20:03:33,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:03:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:03:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:03:33,933 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:35,490 INFO L93 Difference]: Finished difference Result 235 states and 273 transitions. [2022-11-18 20:03:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:03:35,491 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-18 20:03:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:35,492 INFO L225 Difference]: With dead ends: 235 [2022-11-18 20:03:35,492 INFO L226 Difference]: Without dead ends: 210 [2022-11-18 20:03:35,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:03:35,493 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 173 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:35,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 34 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:03:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-18 20:03:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 149. [2022-11-18 20:03:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.162162162162162) internal successors, (172), 148 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 172 transitions. [2022-11-18 20:03:35,597 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 172 transitions. Word has length 63 [2022-11-18 20:03:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:35,598 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 172 transitions. [2022-11-18 20:03:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 172 transitions. [2022-11-18 20:03:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:03:35,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:35,599 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:35,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:03:35,806 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1437404093, now seen corresponding path program 18 times [2022-11-18 20:03:35,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:35,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504889418] [2022-11-18 20:03:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:36,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504889418] [2022-11-18 20:03:36,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504889418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:36,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920352807] [2022-11-18 20:03:36,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:03:36,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:36,230 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:36,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:03:36,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-18 20:03:36,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:36,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:03:36,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:37,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:03:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920352807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:37,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:37,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-11-18 20:03:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571551755] [2022-11-18 20:03:37,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:03:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:03:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:03:37,461 INFO L87 Difference]: Start difference. First operand 149 states and 172 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:38,300 INFO L93 Difference]: Finished difference Result 238 states and 281 transitions. [2022-11-18 20:03:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:03:38,301 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 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 64 [2022-11-18 20:03:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:38,302 INFO L225 Difference]: With dead ends: 238 [2022-11-18 20:03:38,302 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 20:03:38,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:03:38,303 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 191 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 42 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:03:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 20:03:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2022-11-18 20:03:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 107 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2022-11-18 20:03:38,352 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 64 [2022-11-18 20:03:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:38,352 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2022-11-18 20:03:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2022-11-18 20:03:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:03:38,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:38,353 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:38,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:38,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-18 20:03:38,560 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1442778319, now seen corresponding path program 19 times [2022-11-18 20:03:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:38,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632938065] [2022-11-18 20:03:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:03:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:43,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632938065] [2022-11-18 20:03:43,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632938065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:43,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496833486] [2022-11-18 20:03:43,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:03:43,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:43,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:43,986 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:43,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 20:03:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-18 20:03:44,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:44,555 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 10 treesize of output 8 [2022-11-18 20:03:44,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:03:44,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:44,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:45,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:45,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:45,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:45,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:03:46,778 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 0 case distinctions, treesize of input 44 treesize of output 27 [2022-11-18 20:03:47,324 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:03:47,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2022-11-18 20:03:47,860 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:03:47,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2022-11-18 20:03:48,431 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:03:48,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2022-11-18 20:03:49,035 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-18 20:03:49,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 73 [2022-11-18 20:03:49,584 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:03:49,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 20:03:50,131 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:03:50,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2022-11-18 20:03:50,485 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:03:50,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 36 [2022-11-18 20:03:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:03:50,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:56,578 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_872| Int) (v_ArrVal_2768 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_864| Int) (|v_ULTIMATE.start_main_~i~0#1_874| Int) (|v_ULTIMATE.start_main_~i~0#1_870| Int) (|v_ULTIMATE.start_main_~i~0#1_866| Int) (|v_ULTIMATE.start_main_~i~0#1_868| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_2768))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select v_ArrVal_2768 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse6 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_874| 4))))) (let ((.cse5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse2 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_872| 4))))) (let ((.cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse2 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_870| 4))))) (let ((.cse1 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse2 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_868| 4))))) (let ((.cse4 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse1 .cse2 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_866| 4))))) (let ((.cse0 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse2 .cse5 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_864| 4))))) (or (not (= .cse0 4)) (not (= .cse1 4)) (not (= .cse2 4)) (not (= .cse3 4)) (not (= .cse4 4)) (= (* c_~N~0 4) (+ .cse3 .cse4 .cse0 .cse1 .cse2 .cse5 .cse6 .cse7)) (not (= .cse5 4)) (not (= 4 .cse7))))))))))))) is different from false [2022-11-18 20:05:22,484 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:05:22,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 7859 treesize of output 1 [2022-11-18 20:05:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 57 trivial. 13 not checked. [2022-11-18 20:05:22,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496833486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:22,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:22,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29, 28] total 86 [2022-11-18 20:05:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463631950] [2022-11-18 20:05:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:22,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-18 20:05:22,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-18 20:05:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=6778, Unknown=28, NotChecked=166, Total=7310 [2022-11-18 20:05:22,492 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 86 states, 86 states have (on average 1.6744186046511629) internal successors, (144), 86 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:48,207 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 111 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:10,453 WARN L233 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 107 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:06:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:20,666 INFO L93 Difference]: Finished difference Result 183 states and 214 transitions. [2022-11-18 20:06:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:06:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.6744186046511629) internal successors, (144), 86 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-18 20:06:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:20,668 INFO L225 Difference]: With dead ends: 183 [2022-11-18 20:06:20,668 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 20:06:20,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2409 ImplicationChecksByTransitivity, 140.9s TimeCoverageRelationStatistics Valid=517, Invalid=9358, Unknown=29, NotChecked=196, Total=10100 [2022-11-18 20:06:20,670 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 87 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1115 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:20,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 188 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 704 Invalid, 0 Unknown, 1115 Unchecked, 1.5s Time] [2022-11-18 20:06:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 20:06:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2022-11-18 20:06:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1871345029239766) internal successors, (203), 171 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 203 transitions. [2022-11-18 20:06:20,769 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 203 transitions. Word has length 69 [2022-11-18 20:06:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:20,770 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 203 transitions. [2022-11-18 20:06:20,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.6744186046511629) internal successors, (144), 86 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 203 transitions. [2022-11-18 20:06:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:06:20,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:20,771 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:20,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-18 20:06:20,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:20,978 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1385520017, now seen corresponding path program 13 times [2022-11-18 20:06:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837677368] [2022-11-18 20:06:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:20,995 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:20,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487450768] [2022-11-18 20:06:20,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:06:20,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:20,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:20,997 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:21,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 20:06:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-18 20:06:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:21,284 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 10 treesize of output 8 [2022-11-18 20:06:21,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 20:06:22,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:22,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:06:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:22,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:22,893 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 4)) is different from false [2022-11-18 20:06:22,910 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:22,934 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:22,957 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:22,980 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 20 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:23,003 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= 4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 24)))) is different from false [2022-11-18 20:06:23,026 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2890 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2890) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) 4)) is different from false [2022-11-18 20:06:23,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:06:23,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2022-11-18 20:06:23,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:06:23,160 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 38 treesize of output 34 [2022-11-18 20:06:23,164 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 3 [2022-11-18 20:06:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 49 trivial. 70 not checked. [2022-11-18 20:06:23,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837677368] [2022-11-18 20:06:23,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487450768] [2022-11-18 20:06:23,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487450768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:23,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:23,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2022-11-18 20:06:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752105244] [2022-11-18 20:06:23,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:06:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:06:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=862, Unknown=7, NotChecked=462, Total=1482 [2022-11-18 20:06:23,771 INFO L87 Difference]: Start difference. First operand 172 states and 203 transitions. Second operand has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:26,089 INFO L93 Difference]: Finished difference Result 284 states and 346 transitions. [2022-11-18 20:06:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-18 20:06:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:26,091 INFO L225 Difference]: With dead ends: 284 [2022-11-18 20:06:26,091 INFO L226 Difference]: Without dead ends: 277 [2022-11-18 20:06:26,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=1028, Unknown=7, NotChecked=504, Total=1722 [2022-11-18 20:06:26,092 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 704 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:26,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 107 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1163 Invalid, 0 Unknown, 704 Unchecked, 1.6s Time] [2022-11-18 20:06:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-18 20:06:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 213. [2022-11-18 20:06:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.2028301886792452) internal successors, (255), 212 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 255 transitions. [2022-11-18 20:06:26,217 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 255 transitions. Word has length 69 [2022-11-18 20:06:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:26,218 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 255 transitions. [2022-11-18 20:06:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.9743589743589745) internal successors, (116), 39 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 255 transitions. [2022-11-18 20:06:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:06:26,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:26,220 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:26,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,420 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash -762719949, now seen corresponding path program 14 times [2022-11-18 20:06:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516874323] [2022-11-18 20:06:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:26,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:26,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703680926] [2022-11-18 20:06:26,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:26,439 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf51dc3-a696-494d-b03f-3390659c8c19/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 20:06:26,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:26,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 20:06:26,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:27,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 37 treesize of output 17 [2022-11-18 20:06:27,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:06:27,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:27,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:27,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:27,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:27,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:06:27,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:06:28,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-11-18 20:06:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 28 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:06:28,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:28,277 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2997 (Array Int Int))) (= 4 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2997) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2022-11-18 20:06:28,291 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2997 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2997) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:28,495 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2997 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2997) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 20 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:28,515 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2997 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2997) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 20 |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) is different from false [2022-11-18 20:06:31,030 INFO L321 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2022-11-18 20:06:31,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2022-11-18 20:06:31,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:06:31,044 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 38 treesize of output 34 [2022-11-18 20:06:31,059 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 3 [2022-11-18 20:06:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 28 proven. 66 refuted. 0 times theorem prover too weak. 51 trivial. 44 not checked. [2022-11-18 20:06:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:35,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516874323] [2022-11-18 20:06:35,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:35,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703680926] [2022-11-18 20:06:35,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703680926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:35,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:35,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2022-11-18 20:06:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809599286] [2022-11-18 20:06:35,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:35,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:06:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:06:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1038, Unknown=9, NotChecked=276, Total=1482 [2022-11-18 20:06:35,643 INFO L87 Difference]: Start difference. First operand 213 states and 255 transitions. Second operand has 39 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 39 states have internal predecessors, (110), 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)