./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/eureka_05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/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_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/eureka_05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/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_5637efe8-7aa8-411a-b60e-107f01669d08/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 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab --- 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 20:34:51,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:34:51,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:34:51,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:34:51,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:34:51,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:34:51,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:34:51,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:34:51,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:34:51,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:34:51,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:34:51,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:34:51,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:34:51,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:34:51,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:34:51,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:34:51,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:34:51,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:34:51,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:34:51,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:34:51,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:34:51,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:34:51,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:34:51,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:34:51,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:34:51,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:34:51,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:34:51,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:34:51,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:34:51,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:34:51,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:34:51,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:34:51,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:34:51,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:34:51,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:34:51,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:34:51,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:34:51,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:34:51,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:34:51,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:34:51,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:34:51,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:34:51,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:34:51,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:34:51,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:34:51,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:34:51,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:34:51,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:34:51,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:34:51,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:34:51,490 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:34:51,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:34:51,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:34:51,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:34:51,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:34:51,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:34:51,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:34:51,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:34:51,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:34:51,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:34:51,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:34:51,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:34:51,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:34:51,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:34:51,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:34:51,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:34:51,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:51,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:34:51,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:34:51,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:34:51,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:34:51,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:34:51,496 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:34:51,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:34:51,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:34:51,497 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_5637efe8-7aa8-411a-b60e-107f01669d08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2022-11-18 20:34:51,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:34:51,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:34:51,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:34:51,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:34:51,832 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:34:51,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/loops/eureka_05.i [2022-11-18 20:34:51,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/data/8792745e1/ae7b957ca850492fb882522f738680f5/FLAGa59049287 [2022-11-18 20:34:52,425 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:34:52,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/sv-benchmarks/c/loops/eureka_05.i [2022-11-18 20:34:52,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/data/8792745e1/ae7b957ca850492fb882522f738680f5/FLAGa59049287 [2022-11-18 20:34:52,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/data/8792745e1/ae7b957ca850492fb882522f738680f5 [2022-11-18 20:34:52,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:34:52,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:34:52,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:52,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:34:52,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:34:52,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:52" (1/1) ... [2022-11-18 20:34:52,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796e1169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:52, skipping insertion in model container [2022-11-18 20:34:52,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:52" (1/1) ... [2022-11-18 20:34:52,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:34:52,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:34:53,034 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_5637efe8-7aa8-411a-b60e-107f01669d08/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-11-18 20:34:53,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:53,058 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:34:53,071 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_5637efe8-7aa8-411a-b60e-107f01669d08/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-11-18 20:34:53,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:53,093 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:34:53,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53 WrapperNode [2022-11-18 20:34:53,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:53,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:53,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:34:53,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:34:53,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,137 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2022-11-18 20:34:53,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:53,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:34:53,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:34:53,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:34:53,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:34:53,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:34:53,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:34:53,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:34:53,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (1/1) ... [2022-11-18 20:34:53,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:53,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:53,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:34:53,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:34:53,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:34:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:34:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:34:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:34:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:34:53,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:34:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:34:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:34:53,361 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:34:53,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:34:53,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:34:53,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:34:53,530 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:34:53,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:53 BoogieIcfgContainer [2022-11-18 20:34:53,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:34:53,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:34:53,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:34:53,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:34:53,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:52" (1/3) ... [2022-11-18 20:34:53,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177d996d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:53, skipping insertion in model container [2022-11-18 20:34:53,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:53" (2/3) ... [2022-11-18 20:34:53,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177d996d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:53, skipping insertion in model container [2022-11-18 20:34:53,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:53" (3/3) ... [2022-11-18 20:34:53,541 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2022-11-18 20:34:53,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:34:53,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:34:53,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:34:53,617 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;@12a0a145, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:34:53,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:34:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:34:53,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:53,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:53,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2015864939, now seen corresponding path program 1 times [2022-11-18 20:34:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940731866] [2022-11-18 20:34:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,821 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 20:34:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940731866] [2022-11-18 20:34:53,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940731866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:53,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:53,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819545280] [2022-11-18 20:34:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:53,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:34:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:34:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:53,893 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:53,944 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-18 20:34:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:34:53,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 20:34:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:53,954 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:34:53,954 INFO L226 Difference]: Without dead ends: 20 [2022-11-18 20:34:53,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:53,972 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:53,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 39 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-18 20:34:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-11-18 20:34:54,015 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 20:34:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-18 20:34:54,018 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-11-18 20:34:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:54,019 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-18 20:34:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-18 20:34:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 20:34:54,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:54,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:34:54,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1565230291, now seen corresponding path program 1 times [2022-11-18 20:34:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859871006] [2022-11-18 20:34:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:54,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859871006] [2022-11-18 20:34:54,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859871006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:54,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137741515] [2022-11-18 20:34:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:54,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:54,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:54,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:34:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:34:54,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:54,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:54,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137741515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:54,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:54,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-18 20:34:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436725342] [2022-11-18 20:34:54,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:54,406 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:54,477 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-18 20:34:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:54,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 20:34:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:54,480 INFO L225 Difference]: With dead ends: 45 [2022-11-18 20:34:54,482 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 20:34:54,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:54,484 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:54,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 56 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 20:34:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-18 20:34:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-18 20:34:54,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2022-11-18 20:34:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:54,499 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-18 20:34:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-18 20:34:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:34:54,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:54,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:54,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:34:54,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:34:54,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:54,708 INFO L85 PathProgramCache]: Analyzing trace with hash -7962739, now seen corresponding path program 2 times [2022-11-18 20:34:54,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:54,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262155004] [2022-11-18 20:34:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:34:54,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262155004] [2022-11-18 20:34:54,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262155004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:54,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:54,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110786035] [2022-11-18 20:34:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:54,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:34:54,833 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:54,858 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-18 20:34:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:34:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:34:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:54,860 INFO L225 Difference]: With dead ends: 38 [2022-11-18 20:34:54,860 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 20:34:54,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 20:34:54,861 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:54,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 20:34:54,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-18 20:34:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 20:34:54,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-18 20:34:54,868 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2022-11-18 20:34:54,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:54,869 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-18 20:34:54,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:54,869 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-18 20:34:54,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:34:54,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:54,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:54,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:34:54,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1148715813, now seen corresponding path program 1 times [2022-11-18 20:34:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:54,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004806629] [2022-11-18 20:34:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:34:55,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:55,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004806629] [2022-11-18 20:34:55,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004806629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:55,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:55,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:34:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784452710] [2022-11-18 20:34:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:55,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:34:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:34:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:34:55,012 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:55,094 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2022-11-18 20:34:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:55,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:34:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:55,096 INFO L225 Difference]: With dead ends: 47 [2022-11-18 20:34:55,096 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 20:34:55,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:55,098 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:55,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 20:34:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2022-11-18 20:34:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-18 20:34:55,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2022-11-18 20:34:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:55,110 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-18 20:34:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-18 20:34:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:34:55,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:55,112 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:34:55,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1025080129, now seen corresponding path program 1 times [2022-11-18 20:34:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:55,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551570631] [2022-11-18 20:34:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:34:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551570631] [2022-11-18 20:34:55,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551570631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:55,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162398578] [2022-11-18 20:34:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:55,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:55,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:34:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:55,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:34:55,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:55,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:34:55,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162398578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:55,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:55,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2022-11-18 20:34:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397596724] [2022-11-18 20:34:55,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:34:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:34:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:34:55,529 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 20:34:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:55,718 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2022-11-18 20:34:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:34:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 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 20:34:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:55,722 INFO L225 Difference]: With dead ends: 80 [2022-11-18 20:34:55,722 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:34:55,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:34:55,727 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:55,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 109 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:34:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 35. [2022-11-18 20:34:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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 20:34:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-18 20:34:55,744 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2022-11-18 20:34:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:55,744 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-18 20:34:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 20:34:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-18 20:34:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:34:55,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:55,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:55,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:55,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2070168231, now seen corresponding path program 2 times [2022-11-18 20:34:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058823626] [2022-11-18 20:34:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:34:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058823626] [2022-11-18 20:34:56,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058823626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164843595] [2022-11-18 20:34:56,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:34:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:56,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:56,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:34:56,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:34:56,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:56,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:56,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:34:56,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:34:56,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164843595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:56,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:56,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-18 20:34:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027769897] [2022-11-18 20:34:56,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:34:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:34:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:34:56,416 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 20:34:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:56,672 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2022-11-18 20:34:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:34:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 30 [2022-11-18 20:34:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:56,673 INFO L225 Difference]: With dead ends: 82 [2022-11-18 20:34:56,673 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 20:34:56,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:34:56,675 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 200 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:56,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 76 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 20:34:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2022-11-18 20:34:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.25) internal successors, (75), 60 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 20:34:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2022-11-18 20:34:56,686 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 30 [2022-11-18 20:34:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:56,687 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2022-11-18 20:34:56,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 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 20:34:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2022-11-18 20:34:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:34:56,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:56,688 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:56,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:34:56,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:56,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash 271285953, now seen corresponding path program 3 times [2022-11-18 20:34:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119903031] [2022-11-18 20:34:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:34:57,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119903031] [2022-11-18 20:34:57,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119903031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494089549] [2022-11-18 20:34:57,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:34:57,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:57,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:57,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:34:57,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:34:57,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:57,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:34:57,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-18 20:34:57,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 63 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-18 20:34:57,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494089549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:57,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:57,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2022-11-18 20:34:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313185039] [2022-11-18 20:34:57,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:34:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:34:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:57,443 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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 20:34:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:57,697 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-11-18 20:34:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:34:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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) Word has length 58 [2022-11-18 20:34:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:57,700 INFO L225 Difference]: With dead ends: 79 [2022-11-18 20:34:57,700 INFO L226 Difference]: Without dead ends: 72 [2022-11-18 20:34:57,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=378, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:34:57,701 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 132 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:57,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 56 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:57,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-18 20:34:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-18 20:34:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 20:34:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2022-11-18 20:34:57,717 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 58 [2022-11-18 20:34:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:57,719 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2022-11-18 20:34:57,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 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 20:34:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2022-11-18 20:34:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:34:57,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:57,723 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:57,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:34:57,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:57,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:57,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1550484977, now seen corresponding path program 4 times [2022-11-18 20:34:57,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:57,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429290791] [2022-11-18 20:34:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 33 proven. 123 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:34:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:58,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429290791] [2022-11-18 20:34:58,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429290791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:58,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646482439] [2022-11-18 20:34:58,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:34:58,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:58,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:58,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:58,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:34:58,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:34:58,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:34:58,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 48 proven. 130 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:34:58,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 48 proven. 130 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:34:58,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646482439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:58,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:58,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 13 [2022-11-18 20:34:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165739768] [2022-11-18 20:34:58,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:58,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:34:58,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:34:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:34:58,558 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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 20:34:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:58,992 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2022-11-18 20:34:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:34:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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 66 [2022-11-18 20:34:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:58,994 INFO L225 Difference]: With dead ends: 137 [2022-11-18 20:34:58,994 INFO L226 Difference]: Without dead ends: 113 [2022-11-18 20:34:58,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=386, Invalid=804, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:34:58,996 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 128 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:58,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 111 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-18 20:34:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2022-11-18 20:34:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 104 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 20:34:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2022-11-18 20:34:59,016 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 66 [2022-11-18 20:34:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:59,016 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2022-11-18 20:34:59,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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 20:34:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2022-11-18 20:34:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:34:59,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:59,018 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:59,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:59,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 96032675, now seen corresponding path program 5 times [2022-11-18 20:34:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349091271] [2022-11-18 20:34:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-18 20:34:59,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349091271] [2022-11-18 20:34:59,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349091271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885444511] [2022-11-18 20:34:59,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:34:59,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:59,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:00,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:35:00,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:35:00,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:00,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:35:00,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:00,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:00,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 44 [2022-11-18 20:35:00,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:00,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 17 [2022-11-18 20:35:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 158 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:35:00,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:02,265 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 139 treesize of output 125 [2022-11-18 20:35:02,374 INFO L321 Elim1Store]: treesize reduction 5, result has 95.9 percent of original size [2022-11-18 20:35:02,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 233 treesize of output 274 [2022-11-18 20:35:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 163 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:35:03,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885444511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:03,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:03,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 18] total 42 [2022-11-18 20:35:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235385444] [2022-11-18 20:35:03,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:35:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:35:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:35:03,724 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 42 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 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 20:35:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:09,016 INFO L93 Difference]: Finished difference Result 321 states and 423 transitions. [2022-11-18 20:35:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:35:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 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 69 [2022-11-18 20:35:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:09,020 INFO L225 Difference]: With dead ends: 321 [2022-11-18 20:35:09,020 INFO L226 Difference]: Without dead ends: 233 [2022-11-18 20:35:09,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1039, Invalid=9061, Unknown=0, NotChecked=0, Total=10100 [2022-11-18 20:35:09,024 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 133 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:09,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 226 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 549 Invalid, 0 Unknown, 309 Unchecked, 0.5s Time] [2022-11-18 20:35:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-18 20:35:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 189. [2022-11-18 20:35:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3191489361702127) internal successors, (248), 188 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 20:35:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2022-11-18 20:35:09,064 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 69 [2022-11-18 20:35:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:09,064 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2022-11-18 20:35:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 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 20:35:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2022-11-18 20:35:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:35:09,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:09,066 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:09,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:35:09,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:09,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:09,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash 962635175, now seen corresponding path program 1 times [2022-11-18 20:35:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:09,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420810265] [2022-11-18 20:35:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 101 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:35:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420810265] [2022-11-18 20:35:11,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420810265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401876914] [2022-11-18 20:35:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:11,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:11,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:11,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:11,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:35:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:12,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 20:35:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:12,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:12,862 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 1 case distinctions, treesize of input 57 treesize of output 44 [2022-11-18 20:35:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:35:13,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:35:13,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:35:13,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:13,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 53 [2022-11-18 20:35:13,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:13,393 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 28 treesize of output 12 [2022-11-18 20:35:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 55 proven. 190 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:35:13,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:18,601 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 86 treesize of output 76 [2022-11-18 20:35:18,685 INFO L321 Elim1Store]: treesize reduction 5, result has 94.6 percent of original size [2022-11-18 20:35:18,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 134 treesize of output 175 [2022-11-18 20:35:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 148 proven. 53 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:35:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401876914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:19,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:19,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 16] total 60 [2022-11-18 20:35:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127626050] [2022-11-18 20:35:19,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:19,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 20:35:19,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 20:35:19,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3294, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 20:35:19,100 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand has 60 states, 60 states have (on average 2.4166666666666665) internal successors, (145), 60 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 20:35:59,191 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (* |c_ULTIMATE.start_SelectionSort_~lh~0#1| 4))) (let ((.cse4 (select |c_#memory_int| |c_~#array~0.base|)) (.cse5 (+ .cse8 |c_~#array~0.offset|)) (.cse9 (* |c_ULTIMATE.start_SelectionSort_~rh~0#1| 4)) (.cse10 (* |c_ULTIMATE.start_SelectionSort_~i~0#1| 4))) (let ((.cse6 (+ |c_~#array~0.offset| .cse10)) (.cse2 (+ .cse8 |c_~#array~0.offset| 4)) (.cse3 (+ .cse8 |c_~#array~0.offset| 12)) (.cse7 (+ .cse9 |c_~#array~0.offset|)) (.cse0 (select .cse4 .cse5))) (and (= |c_~#array~0.offset| 0) (forall ((v_ArrVal_305 Int) (v_ArrVal_304 Int)) (or (< v_ArrVal_304 .cse0) (let ((.cse1 (store (store .cse4 .cse5 v_ArrVal_305) .cse6 v_ArrVal_304))) (< (select .cse1 .cse2) (+ (select .cse1 .cse3) 1))))) (< (select .cse4 .cse7) (+ (select .cse4 .cse6) 1)) (or (and (= .cse8 .cse9) (= (+ .cse8 4) .cse10)) (= .cse9 .cse10)) (forall ((v_ArrVal_305 Int) (v_ArrVal_304 Int)) (or (let ((.cse11 (store (store .cse4 .cse5 v_ArrVal_305) .cse7 v_ArrVal_304))) (< (select .cse11 .cse2) (+ (select .cse11 .cse3) 1))) (< v_ArrVal_304 .cse0))))))) is different from false [2022-11-18 20:36:56,265 WARN L233 SmtUtils]: Spent 50.76s on a formula simplification. DAG size of input: 60 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:48,132 WARN L233 SmtUtils]: Spent 32.19s on a formula simplification. DAG size of input: 48 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:59,399 INFO L93 Difference]: Finished difference Result 833 states and 1126 transitions. [2022-11-18 20:38:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-18 20:38:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.4166666666666665) internal successors, (145), 60 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) Word has length 69 [2022-11-18 20:38:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:59,403 INFO L225 Difference]: With dead ends: 833 [2022-11-18 20:38:59,403 INFO L226 Difference]: Without dead ends: 686 [2022-11-18 20:38:59,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7262 ImplicationChecksByTransitivity, 224.9s TimeCoverageRelationStatistics Valid=1389, Invalid=21231, Unknown=34, NotChecked=298, Total=22952 [2022-11-18 20:38:59,409 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 366 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1698 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:59,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 804 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1963 Invalid, 0 Unknown, 1698 Unchecked, 1.6s Time] [2022-11-18 20:38:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-18 20:38:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 298. [2022-11-18 20:38:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.3063973063973064) internal successors, (388), 297 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 20:38:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 388 transitions. [2022-11-18 20:38:59,481 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 388 transitions. Word has length 69 [2022-11-18 20:38:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:59,481 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 388 transitions. [2022-11-18 20:38:59,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.4166666666666665) internal successors, (145), 60 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 20:38:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 388 transitions. [2022-11-18 20:38:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:38:59,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:59,488 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:59,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:38:59,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1415361629, now seen corresponding path program 2 times [2022-11-18 20:38:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:59,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622635872] [2022-11-18 20:38:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 56 proven. 11 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-18 20:39:01,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622635872] [2022-11-18 20:39:01,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622635872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083652338] [2022-11-18 20:39:01,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:01,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:01,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:01,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:01,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:39:01,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:39:01,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:01,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:39:01,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:01,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:01,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:01,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:01,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:39:01,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 52 [2022-11-18 20:39:02,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:39:02,175 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 28 treesize of output 12 [2022-11-18 20:39:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 121 proven. 47 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:39:02,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:15,063 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 71 treesize of output 63 [2022-11-18 20:39:15,132 INFO L321 Elim1Store]: treesize reduction 5, result has 92.8 percent of original size [2022-11-18 20:39:15,133 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 108 treesize of output 131 [2022-11-18 20:39:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 123 proven. 45 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:39:15,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083652338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:15,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:15,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 16] total 40 [2022-11-18 20:39:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595976139] [2022-11-18 20:39:15,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:39:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:39:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1402, Unknown=4, NotChecked=0, Total=1560 [2022-11-18 20:39:15,464 INFO L87 Difference]: Start difference. First operand 298 states and 388 transitions. Second operand has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 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 20:39:28,090 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_SelectionSort_~lh~0#1| 4))) (let ((.cse0 (* |c_ULTIMATE.start_SelectionSort_~rh~0#1| 4)) (.cse4 (+ .cse1 |c_~#array~0.offset| 12)) (.cse5 (+ .cse1 |c_~#array~0.offset| 8)) (.cse6 (select |c_#memory_int| |c_~#array~0.base|)) (.cse7 (+ .cse1 |c_~#array~0.offset|))) (and (let ((.cse2 (* |c_ULTIMATE.start_SelectionSort_~i~0#1| 4))) (or (and (= .cse0 (+ .cse1 8)) (= (+ .cse1 12) .cse2)) (= .cse0 .cse2))) (= |c_~#array~0.offset| 0) (forall ((v_ArrVal_365 Int) (v_ArrVal_364 Int)) (let ((.cse3 (store (store .cse6 .cse7 v_ArrVal_365) (+ .cse0 |c_~#array~0.offset|) v_ArrVal_364))) (< (select .cse3 .cse4) (select .cse3 .cse5)))) (forall ((v_ArrVal_365 Int) (v_ArrVal_364 Int) (|v_ULTIMATE.start_SelectionSort_~rh~0#1_58| Int)) (or (< |v_ULTIMATE.start_SelectionSort_~rh~0#1_58| (+ |c_ULTIMATE.start_SelectionSort_~i~0#1| 1)) (let ((.cse8 (store (store .cse6 .cse7 v_ArrVal_365) (+ (* |v_ULTIMATE.start_SelectionSort_~rh~0#1_58| 4) |c_~#array~0.offset|) v_ArrVal_364))) (< (select .cse8 .cse4) (select .cse8 .cse5)))))))) is different from false [2022-11-18 20:39:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:41,614 INFO L93 Difference]: Finished difference Result 890 states and 1175 transitions. [2022-11-18 20:39:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 20:39:41,623 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 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 69 [2022-11-18 20:39:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:41,629 INFO L225 Difference]: With dead ends: 890 [2022-11-18 20:39:41,629 INFO L226 Difference]: Without dead ends: 612 [2022-11-18 20:39:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=414, Invalid=4409, Unknown=11, NotChecked=136, Total=4970 [2022-11-18 20:39:41,635 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 143 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:41,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 298 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 799 Invalid, 0 Unknown, 126 Unchecked, 0.7s Time] [2022-11-18 20:39:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-18 20:39:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 349. [2022-11-18 20:39:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3247126436781609) internal successors, (461), 348 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 20:39:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 461 transitions. [2022-11-18 20:39:41,731 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 461 transitions. Word has length 69 [2022-11-18 20:39:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:41,732 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 461 transitions. [2022-11-18 20:39:41,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.05) internal successors, (82), 40 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 20:39:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 461 transitions. [2022-11-18 20:39:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:39:41,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:41,734 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:41,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:39:41,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:41,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1896441887, now seen corresponding path program 3 times [2022-11-18 20:39:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:41,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5177669] [2022-11-18 20:39:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:39:42,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5177669] [2022-11-18 20:39:42,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5177669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:42,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258228257] [2022-11-18 20:39:42,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:39:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:42,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:42,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:39:43,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-18 20:39:43,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:43,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:39:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:43,194 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:39:43,195 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 11 treesize of output 11 [2022-11-18 20:39:43,239 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 25 [2022-11-18 20:39:43,279 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 25 treesize of output 25 [2022-11-18 20:39:43,307 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 25 [2022-11-18 20:39:43,341 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 25 [2022-11-18 20:39:43,377 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 25 [2022-11-18 20:39:43,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:39:43,808 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 2 case distinctions, treesize of input 44 treesize of output 36 [2022-11-18 20:39:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 78 proven. 16 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 20:39:43,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:44,280 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_424 (Array Int Int)) (|ULTIMATE.start_SelectionSort_~rh~0#1| Int)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| v_ArrVal_424) |c_~#array~0.base|))) (let ((.cse0 (select .cse1 (+ |c_~#array~0.offset| (* |ULTIMATE.start_SelectionSort_~rh~0#1| 4))))) (or (< .cse0 (+ (select .cse1 (+ |c_~#array~0.offset| 12)) 1)) (< (select .cse1 (+ |c_~#array~0.offset| 8)) .cse0))))) is different from false [2022-11-18 20:39:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 161 trivial. 9 not checked. [2022-11-18 20:39:44,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258228257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:44,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:44,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2022-11-18 20:39:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415524524] [2022-11-18 20:39:44,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:39:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:39:44,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=660, Unknown=1, NotChecked=52, Total=812 [2022-11-18 20:39:44,420 INFO L87 Difference]: Start difference. First operand 349 states and 461 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 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 20:39:49,550 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 44 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:57,665 INFO L93 Difference]: Finished difference Result 614 states and 819 transitions. [2022-11-18 20:39:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:39:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 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) Word has length 69 [2022-11-18 20:39:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:57,667 INFO L225 Difference]: With dead ends: 614 [2022-11-18 20:39:57,667 INFO L226 Difference]: Without dead ends: 290 [2022-11-18 20:39:57,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=273, Invalid=1369, Unknown=2, NotChecked=78, Total=1722 [2022-11-18 20:39:57,669 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 96 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:57,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 215 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2022-11-18 20:39:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-18 20:39:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 285. [2022-11-18 20:39:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3345070422535212) internal successors, (379), 284 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 20:39:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 379 transitions. [2022-11-18 20:39:57,739 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 379 transitions. Word has length 69 [2022-11-18 20:39:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 379 transitions. [2022-11-18 20:39:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 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 20:39:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 379 transitions. [2022-11-18 20:39:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:39:57,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:57,741 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:57,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:57,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash -882650715, now seen corresponding path program 4 times [2022-11-18 20:39:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:57,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284558557] [2022-11-18 20:39:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 94 proven. 24 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-18 20:39:58,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:58,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284558557] [2022-11-18 20:39:58,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284558557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:58,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986642655] [2022-11-18 20:39:58,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:39:58,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:58,923 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:58,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:39:59,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:39:59,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:59,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:39:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:59,131 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:39:59,131 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 11 treesize of output 11 [2022-11-18 20:39:59,199 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 15 treesize of output 11 [2022-11-18 20:39:59,597 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 18 treesize of output 20 [2022-11-18 20:39:59,804 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 18 treesize of output 20 [2022-11-18 20:39:59,959 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 18 treesize of output 20 [2022-11-18 20:40:00,065 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 18 treesize of output 20 [2022-11-18 20:40:00,124 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 18 treesize of output 20 [2022-11-18 20:40:00,280 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 20:40:00,281 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 36 treesize of output 23 [2022-11-18 20:40:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-18 20:40:00,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:00,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:00,764 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 22 treesize of output 23 [2022-11-18 20:40:00,772 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:40:00,773 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 34 treesize of output 26 [2022-11-18 20:40:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-18 20:40:00,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986642655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:00,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:00,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2022-11-18 20:40:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335152513] [2022-11-18 20:40:00,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:40:00,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:40:00,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=709, Unknown=12, NotChecked=0, Total=812 [2022-11-18 20:40:00,856 INFO L87 Difference]: Start difference. First operand 285 states and 379 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 20:40:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:01,603 INFO L93 Difference]: Finished difference Result 551 states and 740 transitions. [2022-11-18 20:40:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:40:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 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 20:40:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:01,606 INFO L225 Difference]: With dead ends: 551 [2022-11-18 20:40:01,606 INFO L226 Difference]: Without dead ends: 291 [2022-11-18 20:40:01,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=250, Invalid=1455, Unknown=17, NotChecked=0, Total=1722 [2022-11-18 20:40:01,607 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:01,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 142 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2022-11-18 20:40:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-18 20:40:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 288. [2022-11-18 20:40:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3310104529616724) internal successors, (382), 287 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 20:40:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 382 transitions. [2022-11-18 20:40:01,691 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 382 transitions. Word has length 69 [2022-11-18 20:40:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:01,691 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 382 transitions. [2022-11-18 20:40:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 20:40:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 382 transitions. [2022-11-18 20:40:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:01,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:01,693 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:01,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:01,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1757098617, now seen corresponding path program 1 times [2022-11-18 20:40:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:01,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375952161] [2022-11-18 20:40:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 117 proven. 73 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:40:03,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375952161] [2022-11-18 20:40:03,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375952161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:03,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122953025] [2022-11-18 20:40:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:03,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:03,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:03,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:03,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:40:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:03,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 20:40:03,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:03,543 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:40:03,544 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 11 treesize of output 11 [2022-11-18 20:40:03,605 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 23 treesize of output 23 [2022-11-18 20:40:03,679 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 23 treesize of output 23 [2022-11-18 20:40:03,765 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 23 treesize of output 23 [2022-11-18 20:40:03,797 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 23 treesize of output 23 [2022-11-18 20:40:03,828 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 23 treesize of output 23 [2022-11-18 20:40:04,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:04,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:04,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-18 20:40:05,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:05,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:05,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:05,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 18 [2022-11-18 20:40:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 117 proven. 86 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:40:05,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:07,454 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#array~1#1.base_12| Int) (v_ArrVal_544 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#array~1#1.base_12| v_ArrVal_544) |c_~#array~0.base|))) (let ((.cse1 (select .cse0 (+ |c_~#array~0.offset| 12))) (.cse2 (select .cse0 (+ 16 |c_~#array~0.offset|)))) (or (< (select .cse0 (+ |c_~#array~0.offset| 8)) (+ .cse1 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~#array~1#1.base_12|) 0)) (< .cse1 (+ .cse2 1)) (< .cse2 (select .cse0 |c_~#array~0.offset|)))))) is different from false [2022-11-18 20:40:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 127 proven. 64 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:40:07,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122953025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:07,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:07,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 20] total 58 [2022-11-18 20:40:07,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053441521] [2022-11-18 20:40:07,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:07,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:40:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:07,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:40:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=2964, Unknown=3, NotChecked=112, Total=3422 [2022-11-18 20:40:07,460 INFO L87 Difference]: Start difference. First operand 288 states and 382 transitions. Second operand has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 20:40:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:15,622 INFO L93 Difference]: Finished difference Result 638 states and 859 transitions. [2022-11-18 20:40:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:40:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:15,624 INFO L225 Difference]: With dead ends: 638 [2022-11-18 20:40:15,624 INFO L226 Difference]: Without dead ends: 399 [2022-11-18 20:40:15,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1682, Invalid=10091, Unknown=3, NotChecked=214, Total=11990 [2022-11-18 20:40:15,628 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 551 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 502 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:15,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 273 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 706 Invalid, 0 Unknown, 502 Unchecked, 0.8s Time] [2022-11-18 20:40:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-18 20:40:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 334. [2022-11-18 20:40:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.3183183183183182) internal successors, (439), 333 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 20:40:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2022-11-18 20:40:15,698 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 73 [2022-11-18 20:40:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:15,698 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2022-11-18 20:40:15,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.016949152542373) internal successors, (119), 58 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 20:40:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2022-11-18 20:40:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:15,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:15,700 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:15,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:40:15,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1737329913, now seen corresponding path program 2 times [2022-11-18 20:40:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:15,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598259115] [2022-11-18 20:40:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 119 proven. 29 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-18 20:40:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:17,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598259115] [2022-11-18 20:40:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598259115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:17,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278948698] [2022-11-18 20:40:17,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:17,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:17,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:40:17,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:17,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:17,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 20:40:17,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:17,551 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 23 treesize of output 24 [2022-11-18 20:40:17,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:17,842 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 1 case distinctions, treesize of input 57 treesize of output 44 [2022-11-18 20:40:18,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:18,004 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 28 treesize of output 12 [2022-11-18 20:40:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 55 proven. 142 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:40:18,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:20,341 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_606 Int) (v_ArrVal_605 Int)) (let ((.cse3 (* |c_ULTIMATE.start_SelectionSort_~lh~0#1| 4))) (let ((.cse0 (select |c_#memory_int| |c_~#array~0.base|)) (.cse1 (+ .cse3 |c_~#array~0.offset|))) (or (< v_ArrVal_605 (select .cse0 .cse1)) (let ((.cse2 (store (store .cse0 .cse1 v_ArrVal_606) (+ |c_~#array~0.offset| 4 (* |c_ULTIMATE.start_SelectionSort_~i~0#1| 4)) v_ArrVal_605))) (< (select .cse2 (+ .cse3 |c_~#array~0.offset| 4)) (+ (select .cse2 (+ .cse3 |c_~#array~0.offset| 8)) 1))))))) is different from false [2022-11-18 20:40:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 135 proven. 7 refuted. 0 times theorem prover too weak. 114 trivial. 1 not checked. [2022-11-18 20:40:20,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278948698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:20,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:20,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 11] total 36 [2022-11-18 20:40:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84274705] [2022-11-18 20:40:20,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:40:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:40:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1057, Unknown=1, NotChecked=66, Total=1260 [2022-11-18 20:40:20,527 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 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 20:40:22,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:22,021 INFO L93 Difference]: Finished difference Result 761 states and 1020 transitions. [2022-11-18 20:40:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:40:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 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 73 [2022-11-18 20:40:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:22,023 INFO L225 Difference]: With dead ends: 761 [2022-11-18 20:40:22,024 INFO L226 Difference]: Without dead ends: 503 [2022-11-18 20:40:22,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=361, Invalid=2504, Unknown=1, NotChecked=104, Total=2970 [2022-11-18 20:40:22,025 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 161 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:22,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 361 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 482 Invalid, 0 Unknown, 275 Unchecked, 0.5s Time] [2022-11-18 20:40:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-18 20:40:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 338. [2022-11-18 20:40:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.3264094955489614) internal successors, (447), 337 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 20:40:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 447 transitions. [2022-11-18 20:40:22,131 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 447 transitions. Word has length 73 [2022-11-18 20:40:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:22,131 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 447 transitions. [2022-11-18 20:40:22,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 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 20:40:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 447 transitions. [2022-11-18 20:40:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:40:22,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:22,133 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:22,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 20:40:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:40:22,338 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1196191227, now seen corresponding path program 3 times [2022-11-18 20:40:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:22,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113612787] [2022-11-18 20:40:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 90 proven. 131 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 20:40:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113612787] [2022-11-18 20:40:24,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113612787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573570273] [2022-11-18 20:40:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:40:24,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:24,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:24,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:40:24,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-18 20:40:24,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:24,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:40:24,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:24,666 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:40:24,666 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 11 treesize of output 11 [2022-11-18 20:40:24,723 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 15 treesize of output 11 [2022-11-18 20:40:24,811 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 30 treesize of output 29 [2022-11-18 20:40:27,229 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 23 [2022-11-18 20:40:27,424 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 23 [2022-11-18 20:40:27,585 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 23 [2022-11-18 20:40:27,689 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 23 [2022-11-18 20:40:27,758 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 23 [2022-11-18 20:40:28,011 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 20:40:28,012 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 43 treesize of output 25 [2022-11-18 20:40:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-18 20:40:28,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:28,212 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_670 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_~#array~0.base| v_ArrVal_670) |c_ULTIMATE.start_main_~#array~1#1.base|) (+ |c_ULTIMATE.start_main_~#array~1#1.offset| 4)) 1)) is different from false [2022-11-18 20:40:28,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:28,643 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 2 case distinctions, treesize of input 32 treesize of output 38 [2022-11-18 20:40:28,652 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:40:28,652 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 28 [2022-11-18 20:40:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 230 trivial. 9 not checked. [2022-11-18 20:40:28,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573570273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:28,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:28,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 42 [2022-11-18 20:40:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560253275] [2022-11-18 20:40:28,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-18 20:40:28,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-18 20:40:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1567, Unknown=6, NotChecked=80, Total=1806 [2022-11-18 20:40:28,744 INFO L87 Difference]: Start difference. First operand 338 states and 447 transitions. Second operand has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 42 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 20:40:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:33,426 INFO L93 Difference]: Finished difference Result 543 states and 725 transitions. [2022-11-18 20:40:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:40:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 42 states have internal predecessors, (113), 0 states have call successors, (0), 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 73 [2022-11-18 20:40:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:33,428 INFO L225 Difference]: With dead ends: 543 [2022-11-18 20:40:33,429 INFO L226 Difference]: Without dead ends: 382 [2022-11-18 20:40:33,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 133 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=503, Invalid=3655, Unknown=6, NotChecked=126, Total=4290 [2022-11-18 20:40:33,430 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 97 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:33,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 406 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 178 Unchecked, 0.2s Time] [2022-11-18 20:40:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-18 20:40:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 375. [2022-11-18 20:40:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.3128342245989304) internal successors, (491), 374 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 20:40:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 491 transitions. [2022-11-18 20:40:33,567 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 491 transitions. Word has length 73 [2022-11-18 20:40:33,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:33,567 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 491 transitions. [2022-11-18 20:40:33,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 42 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 20:40:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 491 transitions. [2022-11-18 20:40:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:40:33,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:33,569 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 7, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:33,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:33,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:40:33,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 498123733, now seen corresponding path program 4 times [2022-11-18 20:40:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:33,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68287737] [2022-11-18 20:40:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 108 proven. 100 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 20:40:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68287737] [2022-11-18 20:40:35,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68287737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762364895] [2022-11-18 20:40:35,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:40:35,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:35,942 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:35,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5637efe8-7aa8-411a-b60e-107f01669d08/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:40:36,082 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:40:36,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:36,085 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-18 20:40:36,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:36,097 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 20:40:36,172 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 30 treesize of output 29 [2022-11-18 20:40:36,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:36,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 46 [2022-11-18 20:40:36,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:36,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 63 [2022-11-18 20:40:36,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:36,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 72 treesize of output 80 [2022-11-18 20:40:38,008 INFO L321 Elim1Store]: treesize reduction 336, result has 15.2 percent of original size [2022-11-18 20:40:38,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 91 treesize of output 94 [2022-11-18 20:40:39,599 INFO L321 Elim1Store]: treesize reduction 541, result has 32.9 percent of original size [2022-11-18 20:40:39,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 113 treesize of output 316 [2022-11-18 20:40:57,541 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 896 DAG size of output: 292 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:40:57,543 INFO L321 Elim1Store]: treesize reduction 5764, result has 18.0 percent of original size [2022-11-18 20:40:57,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 275 case distinctions, treesize of input 764 treesize of output 1678 [2022-11-18 20:44:25,072 WARN L233 SmtUtils]: Spent 25.19s on a formula simplification. DAG size of input: 652 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:45:06,397 WARN L233 SmtUtils]: Spent 29.89s on a formula simplification. DAG size of input: 1563 DAG size of output: 355 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:45:06,399 INFO L321 Elim1Store]: treesize reduction 8889, result has 16.7 percent of original size [2022-11-18 20:45:06,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 30 select indices, 30 select index equivalence classes, 0 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 463 case distinctions, treesize of input 834 treesize of output 2239