./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:37:46,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:37:46,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:37:46,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:37:46,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:37:46,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:37:46,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:37:46,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:37:46,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:37:46,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:37:46,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:37:46,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:37:46,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:37:46,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:37:46,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:37:46,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:37:46,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:37:46,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:37:46,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:37:46,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:37:46,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:37:46,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:37:46,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:37:46,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:37:46,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:37:46,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:37:46,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:37:46,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:37:46,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:37:46,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:37:46,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:37:46,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:37:46,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:37:46,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:37:46,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:37:46,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:37:46,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:37:46,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:37:46,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:37:46,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:37:46,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:37:46,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:37:46,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:37:46,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:37:46,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:37:46,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:37:46,570 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:37:46,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:37:46,570 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:37:46,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:37:46,577 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:37:46,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:37:46,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:37:46,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:37:46,579 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:37:46,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:37:46,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:37:46,579 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:37:46,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:37:46,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:37:46,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:37:46,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:37:46,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:37:46,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:37:46,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:37:46,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:37:46,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:37:46,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:37:46,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:37:46,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:37:46,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:37:46,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:37:46,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:37:46,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:46,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:37:46,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:37:46,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:37:46,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:37:46,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:37:46,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:37:46,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:37:46,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:37:46,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 [2021-11-12 22:37:46,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:37:46,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:37:46,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:37:46,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:37:46,875 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:37:46,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-11-12 22:37:46,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5f2f8c9ce/106d652e9e0c4896884b89c1ab67a8b0/FLAG4ca981a17 [2021-11-12 22:37:47,449 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:37:47,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-11-12 22:37:47,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5f2f8c9ce/106d652e9e0c4896884b89c1ab67a8b0/FLAG4ca981a17 [2021-11-12 22:37:47,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5f2f8c9ce/106d652e9e0c4896884b89c1ab67a8b0 [2021-11-12 22:37:47,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:37:47,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:37:47,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:47,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:37:47,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:37:47,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:47" (1/1) ... [2021-11-12 22:37:47,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e8129c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:47, skipping insertion in model container [2021-11-12 22:37:47,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:47" (1/1) ... [2021-11-12 22:37:47,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:37:47,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:48,037 WARN L228 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_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-11-12 22:37:48,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,074 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:37:48,083 WARN L228 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_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-11-12 22:37:48,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,106 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:37:48,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48 WrapperNode [2021-11-12 22:37:48,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:48,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:37:48,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:37:48,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:37:48,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:37:48,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:37:48,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:37:48,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:37:48,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:48,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:37:48,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:37:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:37:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:37:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:37:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:37:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:37:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:37:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:37:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:37:48,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:37:48,660 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:37:48,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:48 BoogieIcfgContainer [2021-11-12 22:37:48,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:37:48,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:37:48,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:37:48,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:37:48,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:37:47" (1/3) ... [2021-11-12 22:37:48,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d8210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:48, skipping insertion in model container [2021-11-12 22:37:48,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (2/3) ... [2021-11-12 22:37:48,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d8210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:48, skipping insertion in model container [2021-11-12 22:37:48,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:48" (3/3) ... [2021-11-12 22:37:48,687 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2021-11-12 22:37:48,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:37:48,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:37:48,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:37:48,788 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:37:48,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:37:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:37:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 22:37:48,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:48,820 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:48,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2133247598, now seen corresponding path program 1 times [2021-11-12 22:37:48,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:48,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749845273] [2021-11-12 22:37:48,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:48,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:48,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:48,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789554389] [2021-11-12 22:37:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:48,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:48,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:48,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:37:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:37:49,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:49,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:49,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749845273] [2021-11-12 22:37:49,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:49,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789554389] [2021-11-12 22:37:49,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789554389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,268 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:37:49,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85230996] [2021-11-12 22:37:49,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:37:49,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:37:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:37:49,319 INFO L87 Difference]: Start difference. First operand has 29 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 17 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:37:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:49,359 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2021-11-12 22:37:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:37:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 19 [2021-11-12 22:37:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:49,372 INFO L225 Difference]: With dead ends: 50 [2021-11-12 22:37:49,373 INFO L226 Difference]: Without dead ends: 27 [2021-11-12 22:37:49,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:37:49,384 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:49,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 7.24ms Time] [2021-11-12 22:37:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-12 22:37:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-12 22:37:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 22:37:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2021-11-12 22:37:49,439 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 19 [2021-11-12 22:37:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:49,443 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2021-11-12 22:37:49,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:37:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2021-11-12 22:37:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:37:49,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,450 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:49,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 22:37:49,669 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 635683218, now seen corresponding path program 1 times [2021-11-12 22:37:49,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228205376] [2021-11-12 22:37:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:49,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623139480] [2021-11-12 22:37:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:49,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:49,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:49,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:37:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:37:49,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:49,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:49,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228205376] [2021-11-12 22:37:49,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:49,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623139480] [2021-11-12 22:37:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623139480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,961 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-12 22:37:49,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741507787] [2021-11-12 22:37:49,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:37:49,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:37:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:37:49,968 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:37:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,067 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-11-12 22:37:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:37:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 20 [2021-11-12 22:37:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,072 INFO L225 Difference]: With dead ends: 47 [2021-11-12 22:37:50,073 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 22:37:50,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:37:50,077 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 24 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 36.07ms Time] [2021-11-12 22:37:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 22:37:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-11-12 22:37:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:37:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2021-11-12 22:37:50,104 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 20 [2021-11-12 22:37:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,105 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2021-11-12 22:37:50,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:37:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2021-11-12 22:37:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 22:37:50,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,107 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-12 22:37:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:50,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1775243410, now seen corresponding path program 1 times [2021-11-12 22:37:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496733736] [2021-11-12 22:37:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:50,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725852495] [2021-11-12 22:37:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:50,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:50,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 22:37:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:37:50,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 22:37:50,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 22:37:50,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496733736] [2021-11-12 22:37:50,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725852495] [2021-11-12 22:37:50,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725852495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:50,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487296902] [2021-11-12 22:37:50,683 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-12 22:37:50,683 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:50,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:50,696 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:50,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:50,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,758 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:50,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 22:37:50,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-11-12 22:37:50,796 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-12 22:37:50,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 22:37:50,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:50,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:50,826 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 22:37:50,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:50,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:50,925 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,945 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:50,951 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,952 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:110 [2021-11-12 22:37:50,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,965 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:50,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:37:50,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,993 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.6 percent of original size 108 [2021-11-12 22:37:51,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,006 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:37:51,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,035 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.6 percent of original size 108 [2021-11-12 22:37:51,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,228 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:37:51,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:51,251 INFO L180 QuantifierPusher]: treesize reduction 44, result has 76.2 percent of original size [2021-11-12 22:37:51,259 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 115 [2021-11-12 22:37:51,270 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:37:51,275 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:51,293 INFO L180 QuantifierPusher]: treesize reduction 44, result has 76.2 percent of original size [2021-11-12 22:37:51,300 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 115 [2021-11-12 22:37:51,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,375 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:37:51,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,392 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:51,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:51,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:51,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:51,409 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,413 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,417 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:51,422 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:51,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:51,426 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:51,431 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:51,457 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.7 percent of original size [2021-11-12 22:37:51,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:37:51,478 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:37:51,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,490 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:51,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:51,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:51,501 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:51,504 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,517 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:51,525 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:51,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:51,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:51,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:51,561 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.7 percent of original size [2021-11-12 22:37:51,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:37:51,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,850 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:37:51,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,875 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:37:51,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:51,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,885 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,891 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,896 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:51,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:37:51,900 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:51,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:37:51,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:51,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:51,940 INFO L180 QuantifierPusher]: treesize reduction 78, result has 71.6 percent of original size [2021-11-12 22:37:51,949 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size 173 [2021-11-12 22:37:51,973 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:37:51,991 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,994 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:37:51,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:51,997 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,004 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,008 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:37:52,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:52,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:37:52,024 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:52,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:52,052 INFO L180 QuantifierPusher]: treesize reduction 78, result has 71.6 percent of original size [2021-11-12 22:37:52,061 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size 173 [2021-11-12 22:37:52,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,188 INFO L180 QuantifierPusher]: treesize reduction 84, result has 68.4 percent of original size [2021-11-12 22:37:52,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-12 22:37:52,202 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-12 22:37:52,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 22:37:52,222 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:37:52,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:37:52,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:52,241 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,248 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,252 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:37:52,260 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:52,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:37:52,276 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:52,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:52,298 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:37:52,306 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,308 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:52,314 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:52,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:52,317 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:52,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:37:52,328 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:37:52,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:37:52,331 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:52,335 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:52,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:52,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,411 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:37:52,413 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:52,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:37:52,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,480 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:37:52,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:37:52,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,532 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2021-11-12 22:37:52,536 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:55,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [487296902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:55,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:37:55,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5] total 15 [2021-11-12 22:37:55,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714667458] [2021-11-12 22:37:55,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:55,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:37:55,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:37:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:37:56,001 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:37:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:56,407 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-12 22:37:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:37:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2021-11-12 22:37:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:56,408 INFO L225 Difference]: With dead ends: 38 [2021-11-12 22:37:56,409 INFO L226 Difference]: Without dead ends: 30 [2021-11-12 22:37:56,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:37:56,410 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 390.59ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:56,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 82 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 390.59ms Time] [2021-11-12 22:37:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-12 22:37:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-12 22:37:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 22:37:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-12 22:37:56,419 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 21 [2021-11-12 22:37:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:56,420 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-12 22:37:56,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 22:37:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-12 22:37:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 22:37:56,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:56,421 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:56,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-12 22:37:56,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:56,638 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:56,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash -963684835, now seen corresponding path program 1 times [2021-11-12 22:37:56,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:56,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146546654] [2021-11-12 22:37:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:56,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:56,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:56,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204901924] [2021-11-12 22:37:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:56,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:56,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:56,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 22:37:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 22:37:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 22:37:56,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:56,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:56,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146546654] [2021-11-12 22:37:56,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:56,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204901924] [2021-11-12 22:37:56,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204901924] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:56,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:37:56,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2021-11-12 22:37:56,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095319817] [2021-11-12 22:37:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:56,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:37:56,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:37:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:37:56,930 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:37:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:56,988 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-12 22:37:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:37:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 23 [2021-11-12 22:37:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:56,990 INFO L225 Difference]: With dead ends: 36 [2021-11-12 22:37:56,990 INFO L226 Difference]: Without dead ends: 34 [2021-11-12 22:37:56,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:37:56,992 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:56,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 37 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 43.48ms Time] [2021-11-12 22:37:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-12 22:37:57,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-12 22:37:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 22:37:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-11-12 22:37:57,002 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 23 [2021-11-12 22:37:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:57,003 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-11-12 22:37:57,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:37:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-12 22:37:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:37:57,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:57,004 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:57,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:57,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:57,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -748532437, now seen corresponding path program 1 times [2021-11-12 22:37:57,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:57,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381114263] [2021-11-12 22:37:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:57,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:57,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:57,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194118188] [2021-11-12 22:37:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:57,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:57,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:57,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:37:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:57,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:37:57,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:57,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:57,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:57,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381114263] [2021-11-12 22:37:57,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:57,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194118188] [2021-11-12 22:37:57,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194118188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:57,425 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:57,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 5 [2021-11-12 22:37:57,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461699248] [2021-11-12 22:37:57,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:57,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:37:57,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:37:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:37:57,427 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-12 22:37:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:57,465 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2021-11-12 22:37:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:37:57,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 26 [2021-11-12 22:37:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:57,468 INFO L225 Difference]: With dead ends: 59 [2021-11-12 22:37:57,468 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 22:37:57,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:37:57,470 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.69ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:57,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 26 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 20.69ms Time] [2021-11-12 22:37:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 22:37:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-12 22:37:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 22:37:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-11-12 22:37:57,487 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 26 [2021-11-12 22:37:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:57,488 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-12 22:37:57,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-12 22:37:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-11-12 22:37:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:37:57,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:57,490 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:57,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-12 22:37:57,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:57,718 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 47389219, now seen corresponding path program 1 times [2021-11-12 22:37:57,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:57,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387843238] [2021-11-12 22:37:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:57,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:57,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:57,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613960335] [2021-11-12 22:37:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:57,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:57,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:57,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:37:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:57,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:37:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:57,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:37:58,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:58,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387843238] [2021-11-12 22:37:58,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:58,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613960335] [2021-11-12 22:37:58,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613960335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:58,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:58,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 22:37:58,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705842414] [2021-11-12 22:37:58,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:58,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:37:58,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:58,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:37:58,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:37:58,115 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:37:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:58,164 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-11-12 22:37:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:37:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 28 [2021-11-12 22:37:58,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:58,167 INFO L225 Difference]: With dead ends: 44 [2021-11-12 22:37:58,167 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 22:37:58,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:37:58,168 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 30.53ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:58,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 131 Invalid, 31 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 7 Unchecked, 30.53ms Time] [2021-11-12 22:37:58,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 22:37:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-12 22:37:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-12 22:37:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2021-11-12 22:37:58,191 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 28 [2021-11-12 22:37:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:58,192 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2021-11-12 22:37:58,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:37:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2021-11-12 22:37:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:37:58,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:58,194 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:58,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:58,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-12 22:37:58,410 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2024014237, now seen corresponding path program 1 times [2021-11-12 22:37:58,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:58,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863557071] [2021-11-12 22:37:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:58,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:58,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:58,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146663300] [2021-11-12 22:37:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:58,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:58,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:58,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:58,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 22:37:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:58,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 22:37:58,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 22:37:58,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 22:37:58,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863557071] [2021-11-12 22:37:58,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146663300] [2021-11-12 22:37:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146663300] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:58,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:37:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2021-11-12 22:37:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273983444] [2021-11-12 22:37:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:37:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:37:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:37:58,868 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 22:37:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:58,932 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2021-11-12 22:37:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:37:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 33 [2021-11-12 22:37:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:58,934 INFO L225 Difference]: With dead ends: 56 [2021-11-12 22:37:58,934 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 22:37:58,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:37:58,935 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:58,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 42 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 48.38ms Time] [2021-11-12 22:37:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 22:37:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-12 22:37:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:37:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2021-11-12 22:37:58,946 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 33 [2021-11-12 22:37:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:58,947 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2021-11-12 22:37:58,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 22:37:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2021-11-12 22:37:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-12 22:37:58,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:58,949 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:58,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:59,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-12 22:37:59,173 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 613928483, now seen corresponding path program 1 times [2021-11-12 22:37:59,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:59,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977482083] [2021-11-12 22:37:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:59,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:59,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:37:59,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150858293] [2021-11-12 22:37:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:59,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:59,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:59,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:59,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:37:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:59,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:37:59,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-12 22:37:59,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:29,620 WARN L860 $PredicateComparison]: unable to prove that (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((|ULTIMATE.start_main_~xy~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|))) (or (= .cse0 0) (= (mod (+ .cse0 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|)) |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) 0) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|)))))))) is different from true [2021-11-12 22:41:19,809 WARN L860 $PredicateComparison]: unable to prove that (or (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((|ULTIMATE.start_main_~xy~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|))) (or (= .cse0 0) (= (mod (+ .cse0 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|)) |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) 0) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|)))))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2021-11-12 22:41:45,957 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((|ULTIMATE.start_main_~xy~0#1| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|))) (or (= .cse0 0) (= (mod (+ .cse0 (* (- 1) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|)) |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) 0) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~yy~0#1_BEFORE_CALL_13|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_33| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|) (* |v_ULTIMATE.start_main_~s~0#1_BEFORE_CALL_22| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_31|))))))) is different from true [2021-11-12 22:41:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 2 not checked. [2021-11-12 22:41:46,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:46,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977482083] [2021-11-12 22:41:46,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:46,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150858293] [2021-11-12 22:41:46,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150858293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:46,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1814963342] [2021-11-12 22:41:46,122 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-12 22:41:46,122 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:46,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:46,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:46,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:46,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,136 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:46,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 22:41:46,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-11-12 22:41:46,143 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-11-12 22:41:46,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 22:41:46,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:46,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:46,156 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:46,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 22:41:46,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:46,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:46,184 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:46,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:46,192 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:46,192 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:135, output treesize:110 [2021-11-12 22:41:46,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:41:46,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,212 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.6 percent of original size 108 [2021-11-12 22:41:46,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,219 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:41:46,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,230 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.6 percent of original size 108 [2021-11-12 22:41:46,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,352 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:41:46,354 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:46,367 INFO L180 QuantifierPusher]: treesize reduction 44, result has 76.2 percent of original size [2021-11-12 22:41:46,372 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 115 [2021-11-12 22:41:46,380 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:41:46,382 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:46,399 INFO L180 QuantifierPusher]: treesize reduction 44, result has 76.2 percent of original size [2021-11-12 22:41:46,403 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 115 [2021-11-12 22:41:46,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,463 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:41:46,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,471 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,473 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:46,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:46,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:46,480 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:46,482 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,486 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:46,488 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:46,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:46,491 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:46,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:46,523 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.7 percent of original size [2021-11-12 22:41:46,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:41:46,543 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:41:46,547 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,549 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,550 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:46,553 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:46,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:46,556 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:46,558 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,560 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:46,564 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:46,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:46,566 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:46,570 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:46,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:46,586 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.7 percent of original size [2021-11-12 22:41:46,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-11-12 22:41:46,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:46,831 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:41:46,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:41:46,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:46,847 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,853 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:46,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:41:46,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:46,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:41:46,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:41:46,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:46,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:47,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:47,038 INFO L180 QuantifierPusher]: treesize reduction 78, result has 71.6 percent of original size [2021-11-12 22:41:47,046 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size 173 [2021-11-12 22:41:47,063 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:41:47,073 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,075 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:41:47,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:47,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,084 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,086 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:47,089 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:47,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:41:47,092 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:41:47,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:41:47,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:47,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:47,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:47,453 INFO L180 QuantifierPusher]: treesize reduction 78, result has 71.6 percent of original size [2021-11-12 22:41:47,460 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size 173 [2021-11-12 22:41:47,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,587 INFO L180 QuantifierPusher]: treesize reduction 84, result has 68.4 percent of original size [2021-11-12 22:41:47,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-12 22:41:47,599 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-12 22:41:47,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-12 22:41:47,612 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size [2021-11-12 22:41:47,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-12 22:41:47,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-12 22:41:47,634 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-12 22:41:47,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-12 22:41:47,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 22:41:47,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-12 22:41:47,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 22:41:47,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:47,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-12 22:41:47,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:47,920 INFO L180 QuantifierPusher]: treesize reduction 77, result has 73.6 percent of original size [2021-11-12 22:41:47,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:47,948 INFO L180 QuantifierPusher]: treesize reduction 77, result has 74.2 percent of original size [2021-11-12 22:41:47,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-12 22:41:47,967 INFO L180 QuantifierPusher]: treesize reduction 77, result has 73.6 percent of original size [2021-11-12 22:41:47,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:47,986 INFO L180 QuantifierPusher]: treesize reduction 77, result has 74.2 percent of original size [2021-11-12 22:41:47,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-12 22:41:47,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,189 INFO L180 QuantifierPusher]: treesize reduction 75, result has 74.9 percent of original size [2021-11-12 22:41:48,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:48,213 INFO L180 QuantifierPusher]: treesize reduction 75, result has 75.5 percent of original size [2021-11-12 22:41:48,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-12 22:41:48,232 INFO L180 QuantifierPusher]: treesize reduction 75, result has 74.9 percent of original size [2021-11-12 22:41:48,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:48,250 INFO L180 QuantifierPusher]: treesize reduction 75, result has 75.5 percent of original size [2021-11-12 22:41:48,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-12 22:41:48,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,365 INFO L180 QuantifierPusher]: treesize reduction 87, result has 74.4 percent of original size [2021-11-12 22:41:48,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:48,383 INFO L180 QuantifierPusher]: treesize reduction 75, result has 74.9 percent of original size [2021-11-12 22:41:48,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:48,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,416 INFO L180 QuantifierPusher]: treesize reduction 77, result has 73.6 percent of original size [2021-11-12 22:41:48,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:41:48,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 22:41:48,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,633 INFO L180 QuantifierPusher]: treesize reduction 78, result has 70.9 percent of original size [2021-11-12 22:41:48,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,643 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-12 22:41:48,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:48,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:48,654 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:48,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-12 22:41:48,657 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:41:48,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-12 22:41:48,662 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:48,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:48,679 INFO L180 QuantifierPusher]: treesize reduction 44, result has 79.0 percent of original size [2021-11-12 22:41:48,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:48,690 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:48,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:48,692 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:48,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:48,694 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,696 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,698 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-12 22:41:48,700 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 22:41:48,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-12 22:41:48,702 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:48,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:48,705 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:48,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:48,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,777 INFO L180 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-11-12 22:41:48,779 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:48,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-12 22:41:48,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,852 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:48,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:48,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 22:41:48,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-11-12 22:41:48,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:48,900 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 76 for LOIs [2021-11-12 22:41:48,908 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2021-11-12 22:41:48,912 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:55,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1814963342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:55,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:41:55,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 9] total 27 [2021-11-12 22:41:55,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051505754] [2021-11-12 22:41:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:55,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 22:41:55,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 22:41:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=467, Unknown=3, NotChecked=138, Total=702 [2021-11-12 22:41:55,001 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-12 22:41:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:56,057 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2021-11-12 22:41:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:41:56,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2021-11-12 22:41:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:56,059 INFO L225 Difference]: With dead ends: 71 [2021-11-12 22:41:56,059 INFO L226 Difference]: Without dead ends: 69 [2021-11-12 22:41:56,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=94, Invalid=467, Unknown=3, NotChecked=138, Total=702 [2021-11-12 22:41:56,061 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 976.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1034.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:56,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 122 Invalid, 256 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1034.79ms Time] [2021-11-12 22:41:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-12 22:41:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-11-12 22:41:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-12 22:41:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-11-12 22:41:56,074 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 38 [2021-11-12 22:41:56,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:56,075 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-11-12 22:41:56,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-12 22:41:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-11-12 22:41:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-12 22:41:56,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:56,077 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:56,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:56,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:56,302 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 55138950, now seen corresponding path program 1 times [2021-11-12 22:41:56,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:56,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100558931] [2021-11-12 22:41:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:56,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:56,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 22:41:56,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711831486] [2021-11-12 22:41:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:56,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:56,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:56,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:41:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:41:56,361 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:41:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:41:56,419 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:41:56,419 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:41:56,420 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:41:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:56,652 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:56,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:41:56,679 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:41:56,682 INFO L158 Benchmark]: Toolchain (without parser) took 248867.07ms. Allocated memory was 125.8MB in the beginning and 218.1MB in the end (delta: 92.3MB). Free memory was 90.6MB in the beginning and 97.1MB in the end (delta: -6.6MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,682 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:41:56,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.66ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 102.1MB in the end (delta: -11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.04ms. Allocated memory is still 125.8MB. Free memory was 102.1MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,683 INFO L158 Benchmark]: Boogie Preprocessor took 23.11ms. Allocated memory is still 125.8MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,683 INFO L158 Benchmark]: RCFGBuilder took 502.14ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 87.1MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,683 INFO L158 Benchmark]: TraceAbstraction took 248009.79ms. Allocated memory was 125.8MB in the beginning and 218.1MB in the end (delta: 92.3MB). Free memory was 86.8MB in the beginning and 97.1MB in the end (delta: -10.3MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. [2021-11-12 22:41:56,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.66ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 102.1MB in the end (delta: -11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.04ms. Allocated memory is still 125.8MB. Free memory was 102.1MB in the beginning and 100.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.11ms. Allocated memory is still 125.8MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 502.14ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 87.1MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 248009.79ms. Allocated memory was 125.8MB in the beginning and 218.1MB in the end (delta: 92.3MB). Free memory was 86.8MB in the beginning and 97.1MB in the end (delta: -10.3MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:41:56,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:59,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:59,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:59,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:59,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:59,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:59,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:59,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:59,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:59,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:59,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:59,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:59,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:59,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:59,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:59,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:59,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:59,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:59,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:59,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:59,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:59,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:59,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:59,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:59,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:59,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:59,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:59,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:59,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:59,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:59,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:59,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:59,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:59,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:59,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:59,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:59,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:59,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:59,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:59,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:59,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:59,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:41:59,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:59,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:59,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:59,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:59,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:59,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:59,347 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:59,347 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:59,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:59,348 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:59,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:59,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:41:59,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:41:59,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:59,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:59,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:59,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:59,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:59,352 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:41:59,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:41:59,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:41:59,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:59,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:59,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:59,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:59,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:41:59,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:59,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:59,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:59,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:59,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:59,356 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:41:59,356 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:59,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:59,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:59,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:59,357 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 [2021-11-12 22:41:59,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:59,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:59,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:59,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:59,777 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:59,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-11-12 22:41:59,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5cb710055/396569c0e70e46cfb393031ea4f6d37f/FLAG183c98263 [2021-11-12 22:42:00,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:42:00,386 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2021-11-12 22:42:00,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5cb710055/396569c0e70e46cfb393031ea4f6d37f/FLAG183c98263 [2021-11-12 22:42:00,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/data/5cb710055/396569c0e70e46cfb393031ea4f6d37f [2021-11-12 22:42:00,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:42:00,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:42:00,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:42:00,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:42:00,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:42:00,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:42:00" (1/1) ... [2021-11-12 22:42:00,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b8a285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:00, skipping insertion in model container [2021-11-12 22:42:00,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:42:00" (1/1) ... [2021-11-12 22:42:00,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:42:00,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:42:00,953 WARN L228 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_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-11-12 22:42:00,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:42:00,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:42:01,003 WARN L228 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_df9cd6a4-38f1-48bc-9f36-c72d7a474944/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c[490,503] [2021-11-12 22:42:01,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:42:01,056 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:42:01,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01 WrapperNode [2021-11-12 22:42:01,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:42:01,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:42:01,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:42:01,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:42:01,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:42:01,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:42:01,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:42:01,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:42:01,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:42:01,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:42:01,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:42:01,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:42:01,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (1/1) ... [2021-11-12 22:42:01,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:42:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:01,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:42:01,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:42:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:42:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:42:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:42:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:42:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:42:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:42:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:42:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:42:01,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:42:01,802 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:42:01,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:42:01 BoogieIcfgContainer [2021-11-12 22:42:01,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:42:01,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:42:01,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:42:01,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:42:01,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:42:00" (1/3) ... [2021-11-12 22:42:01,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a65933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:42:01, skipping insertion in model container [2021-11-12 22:42:01,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:42:01" (2/3) ... [2021-11-12 22:42:01,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a65933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:42:01, skipping insertion in model container [2021-11-12 22:42:01,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:42:01" (3/3) ... [2021-11-12 22:42:01,814 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2021-11-12 22:42:01,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:42:01,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:42:01,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:42:01,911 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:42:01,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:42:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:42:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:42:01,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:01,938 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:01,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199732, now seen corresponding path program 1 times [2021-11-12 22:42:01,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:01,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230377647] [2021-11-12 22:42:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:01,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:01,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:01,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:42:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:42:02,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:02,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:02,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230377647] [2021-11-12 22:42:02,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230377647] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:02,421 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:02,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:42:02,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401939015] [2021-11-12 22:42:02,425 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:02,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:42:02,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:42:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:42:02,485 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:42:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:02,520 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2021-11-12 22:42:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:42:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2021-11-12 22:42:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:02,531 INFO L225 Difference]: With dead ends: 65 [2021-11-12 22:42:02,531 INFO L226 Difference]: Without dead ends: 30 [2021-11-12 22:42:02,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:42:02,540 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:02,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:42:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-12 22:42:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-12 22:42:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 22:42:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-12 22:42:02,585 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 28 [2021-11-12 22:42:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:02,585 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-12 22:42:02,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:42:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-12 22:42:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-12 22:42:02,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:02,589 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:02,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:02,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:02,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash -455220980, now seen corresponding path program 1 times [2021-11-12 22:42:02,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:02,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953027698] [2021-11-12 22:42:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:02,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:02,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:02,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:02,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:42:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:03,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:42:03,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:03,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:03,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:03,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953027698] [2021-11-12 22:42:03,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953027698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:03,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:03,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-12 22:42:03,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143717765] [2021-11-12 22:42:03,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:03,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:42:03,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:42:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:42:03,462 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:42:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:04,157 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-11-12 22:42:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:42:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 29 [2021-11-12 22:42:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:04,173 INFO L225 Difference]: With dead ends: 50 [2021-11-12 22:42:04,173 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 22:42:04,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:42:04,175 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 652.40ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:04,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 123 Invalid, 22 Unknown, 0 Unchecked, 6.69ms Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 652.40ms Time] [2021-11-12 22:42:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 22:42:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-11-12 22:42:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:42:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2021-11-12 22:42:04,190 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 29 [2021-11-12 22:42:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:04,191 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2021-11-12 22:42:04,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:42:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2021-11-12 22:42:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-12 22:42:04,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:04,193 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:04,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:42:04,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:04,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1233535180, now seen corresponding path program 1 times [2021-11-12 22:42:04,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:04,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950191124] [2021-11-12 22:42:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:04,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:04,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:04,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:42:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:04,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:42:04,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:42:07,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:42:08,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:08,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950191124] [2021-11-12 22:42:08,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950191124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:08,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1037137274] [2021-11-12 22:42:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:08,038 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:42:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:42:08,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:42:08,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 22:42:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:08,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:42:08,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:09,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:16,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1037137274] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:16,693 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:42:16,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7, 7] total 19 [2021-11-12 22:42:16,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457526534] [2021-11-12 22:42:16,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:16,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:42:16,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:42:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:42:16,695 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-12 22:42:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:18,727 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-12 22:42:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:42:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2021-11-12 22:42:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:18,769 INFO L225 Difference]: With dead ends: 45 [2021-11-12 22:42:18,769 INFO L226 Difference]: Without dead ends: 41 [2021-11-12 22:42:18,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:42:18,771 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1515.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1601.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:18,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 170 Invalid, 35 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 12 Unchecked, 1601.96ms Time] [2021-11-12 22:42:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-12 22:42:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-12 22:42:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:42:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-11-12 22:42:18,783 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 30 [2021-11-12 22:42:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:18,784 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-11-12 22:42:18,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-12 22:42:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-11-12 22:42:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 22:42:18,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:18,786 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:18,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-12 22:42:18,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:42:19,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:19,191 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -73118621, now seen corresponding path program 1 times [2021-11-12 22:42:19,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:19,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441027083] [2021-11-12 22:42:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:19,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:19,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:19,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:19,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:42:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:19,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:42:19,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:42:24,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:28,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:28,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441027083] [2021-11-12 22:42:28,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441027083] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:28,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:42:28,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-12 22:42:28,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674944047] [2021-11-12 22:42:28,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:28,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:42:28,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:42:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:42:28,262 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:42:32,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:34,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:34,997 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2021-11-12 22:42:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:35,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-11-12 22:42:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:35,009 INFO L225 Difference]: With dead ends: 55 [2021-11-12 22:42:35,009 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 22:42:35,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:42:35,011 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6275.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6552.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:35,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 33 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 6552.09ms Time] [2021-11-12 22:42:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 22:42:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-11-12 22:42:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-12 22:42:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-11-12 22:42:35,024 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 32 [2021-11-12 22:42:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:35,024 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-11-12 22:42:35,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:42:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-11-12 22:42:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 22:42:35,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:35,026 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:35,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:35,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:35,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash -910809492, now seen corresponding path program 1 times [2021-11-12 22:42:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:35,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010244944] [2021-11-12 22:42:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:35,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:35,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:35,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:42:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:35,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:42:35,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:42:38,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:42:39,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:39,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010244944] [2021-11-12 22:42:39,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010244944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:39,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [58143272] [2021-11-12 22:42:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:39,771 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:42:39,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:42:39,773 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:42:39,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 22:42:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:40,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:42:40,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 22:42:40,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:42:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [58143272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:41,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101130818] [2021-11-12 22:42:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:41,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:41,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:41,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:41,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:42:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:41,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:42:41,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 22:42:41,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:41,730 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:42:41,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101130818] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:41,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:42:41,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 6, 6] total 12 [2021-11-12 22:42:41,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731696855] [2021-11-12 22:42:41,731 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:41,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:42:41,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:41,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:42:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:41,733 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:42:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:42,241 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-11-12 22:42:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:42:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 35 [2021-11-12 22:42:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:42,244 INFO L225 Difference]: With dead ends: 50 [2021-11-12 22:42:42,244 INFO L226 Difference]: Without dead ends: 40 [2021-11-12 22:42:42,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:42:42,246 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 126.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:42,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 272 Invalid, 43 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 22 Unchecked, 126.95ms Time] [2021-11-12 22:42:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-12 22:42:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-12 22:42:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.24) internal successors, (31), 27 states have internal predecessors, (31), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:42:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-11-12 22:42:42,256 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 35 [2021-11-12 22:42:42,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:42,257 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-11-12 22:42:42,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:42:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-11-12 22:42:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 22:42:42,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:42,259 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:42,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:42:42,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-12 22:42:42,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:42,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:42,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 96561445, now seen corresponding path program 1 times [2021-11-12 22:42:42,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:42,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170074800] [2021-11-12 22:42:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:42,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:42,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:42,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:42,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:42:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:43,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:42:43,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:43,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:43,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:43,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170074800] [2021-11-12 22:42:43,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170074800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:43,632 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:43,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-11-12 22:42:43,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345830056] [2021-11-12 22:42:43,632 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:43,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:43,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:43,634 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:42:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:43,758 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2021-11-12 22:42:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:42:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 35 [2021-11-12 22:42:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:43,764 INFO L225 Difference]: With dead ends: 68 [2021-11-12 22:42:43,764 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 22:42:43,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:43,766 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:43,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 175 Invalid, 42 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 112.06ms Time] [2021-11-12 22:42:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 22:42:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-12 22:42:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-12 22:42:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2021-11-12 22:42:43,789 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 35 [2021-11-12 22:42:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:43,790 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-11-12 22:42:43,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:42:43,798 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2021-11-12 22:42:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-12 22:42:43,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:43,800 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:43,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:44,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:44,001 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 433790877, now seen corresponding path program 1 times [2021-11-12 22:42:44,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:44,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948293755] [2021-11-12 22:42:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:44,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:44,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:44,002 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:44,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:42:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:44,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:42:44,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 22:42:45,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-12 22:42:53,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:53,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948293755] [2021-11-12 22:42:53,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948293755] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:53,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:42:53,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-12 22:42:53,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70196344] [2021-11-12 22:42:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:53,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:42:53,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:42:53,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:42:53,500 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:42:58,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:59,656 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-11-12 22:42:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:59,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-12 22:42:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:59,674 INFO L225 Difference]: With dead ends: 57 [2021-11-12 22:42:59,674 INFO L226 Difference]: Without dead ends: 55 [2021-11-12 22:42:59,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:42:59,675 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5557.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5853.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:59,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 152 Invalid, 26 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 5853.63ms Time] [2021-11-12 22:42:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-12 22:42:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-12 22:42:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 36 states have internal predecessors, (41), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:42:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-11-12 22:42:59,691 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 37 [2021-11-12 22:42:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:59,692 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-12 22:42:59,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-12 22:42:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2021-11-12 22:42:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 22:42:59,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:59,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:59,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:59,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:59,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -553232285, now seen corresponding path program 1 times [2021-11-12 22:42:59,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:59,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314571351] [2021-11-12 22:42:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:59,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:59,909 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:59,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:43:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:00,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:43:00,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 22:43:09,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 22:43:25,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:43:25,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314571351] [2021-11-12 22:43:25,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314571351] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:43:25,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:43:25,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2021-11-12 22:43:25,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980995270] [2021-11-12 22:43:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:43:25,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:43:25,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:43:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:43:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:43:25,905 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-12 22:43:33,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:43:36,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:43:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:40,617 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2021-11-12 22:43:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:43:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2021-11-12 22:43:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:40,637 INFO L225 Difference]: With dead ends: 61 [2021-11-12 22:43:40,637 INFO L226 Difference]: Without dead ends: 59 [2021-11-12 22:43:40,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:43:40,639 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13308.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.14ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14119.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:40,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 185 Invalid, 85 Unknown, 0 Unchecked, 3.14ms Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 14119.96ms Time] [2021-11-12 22:43:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-12 22:43:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-12 22:43:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 39 states have internal predecessors, (44), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:43:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2021-11-12 22:43:40,660 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 42 [2021-11-12 22:43:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:40,662 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2021-11-12 22:43:40,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-12 22:43:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2021-11-12 22:43:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-12 22:43:40,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:40,664 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:43:40,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:40,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:43:40,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:43:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2115683101, now seen corresponding path program 1 times [2021-11-12 22:43:40,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:43:40,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750203659] [2021-11-12 22:43:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:40,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:43:40,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:43:40,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:43:40,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:44:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 22:44:04,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 22:44:19,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:20,833 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:45:44,437 WARN L227 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:46:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-12 22:46:19,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:46:19,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750203659] [2021-11-12 22:46:19,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750203659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:46:19,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [797783916] [2021-11-12 22:46:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:19,275 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:46:19,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:46:19,284 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:46:19,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 22:46:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:20,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:46:20,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:46:32,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:47:22,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [797783916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:47:22,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:47:22,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [12, 11] total 21 [2021-11-12 22:47:22,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340038468] [2021-11-12 22:47:22,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:47:22,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:47:22,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:47:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:47:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=345, Unknown=1, NotChecked=0, Total=420 [2021-11-12 22:47:22,313 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 22:47:34,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:47:37,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:47:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:39,314 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2021-11-12 22:47:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:47:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 47 [2021-11-12 22:47:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:39,355 INFO L225 Difference]: With dead ends: 65 [2021-11-12 22:47:39,355 INFO L226 Difference]: Without dead ends: 63 [2021-11-12 22:47:39,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 105.5s TimeCoverageRelationStatistics Valid=82, Invalid=379, Unknown=1, NotChecked=0, Total=462 [2021-11-12 22:47:39,357 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11717.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12403.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:39,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 173 Invalid, 54 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 12403.43ms Time] [2021-11-12 22:47:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-12 22:47:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-11-12 22:47:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.205128205128205) internal successors, (47), 42 states have internal predecessors, (47), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:47:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2021-11-12 22:47:39,371 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 47 [2021-11-12 22:47:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:47:39,372 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2021-11-12 22:47:39,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-12 22:47:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2021-11-12 22:47:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:47:39,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:47:39,374 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:47:39,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:47:39,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:47:39,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:47:39,776 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:47:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:47:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 559010241, now seen corresponding path program 1 times [2021-11-12 22:47:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:47:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848129543] [2021-11-12 22:47:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:39,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:47:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:47:39,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:47:39,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:47:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:40,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:47:40,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:40,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:41,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:47:41,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848129543] [2021-11-12 22:47:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848129543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:47:41,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [734516018] [2021-11-12 22:47:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:41,228 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:47:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:47:41,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:47:41,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 22:47:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:41,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:47:42,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:42,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:42,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [734516018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:47:42,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63989741] [2021-11-12 22:47:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:42,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:47:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:47:42,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:47:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 22:47:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:43,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:47:43,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:43,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-12 22:47:43,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63989741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:47:43,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:47:43,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 10 [2021-11-12 22:47:43,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71165086] [2021-11-12 22:47:43,878 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:47:43,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:47:43,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:47:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:47:43,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:47:43,880 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 22:47:46,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:47:48,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:47:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:51,554 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2021-11-12 22:47:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:47:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 55 [2021-11-12 22:47:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:51,576 INFO L225 Difference]: With dead ends: 154 [2021-11-12 22:47:51,576 INFO L226 Difference]: Without dead ends: 109 [2021-11-12 22:47:51,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:47:51,578 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 85 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6956.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7328.83ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:51,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 258 Invalid, 147 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [55 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 7328.83ms Time] [2021-11-12 22:47:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-12 22:47:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 81. [2021-11-12 22:47:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 58 states have internal predecessors, (67), 17 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:47:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2021-11-12 22:47:51,593 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 55 [2021-11-12 22:47:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:47:51,594 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2021-11-12 22:47:51,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-12 22:47:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2021-11-12 22:47:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 22:47:51,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:47:51,596 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:47:51,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-12 22:47:51,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-12 22:47:52,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 22:47:52,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:47:52,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:47:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:47:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash -879665460, now seen corresponding path program 1 times [2021-11-12 22:47:52,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:47:52,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933969093] [2021-11-12 22:47:52,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:52,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:47:52,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:47:52,220 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:47:52,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:47:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:47:52,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:47:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:47:53,912 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:47:53,912 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:47:53,913 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:47:53,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:47:54,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:47:54,134 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:47:54,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:47:54,162 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:47:54,164 INFO L158 Benchmark]: Toolchain (without parser) took 353395.02ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.7MB in the beginning and 27.5MB in the end (delta: 7.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-12 22:47:54,164 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:47:54,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.89ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 39.9MB in the end (delta: -5.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:47:54,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.75ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 38.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:47:54,165 INFO L158 Benchmark]: Boogie Preprocessor took 43.56ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 37.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:47:54,166 INFO L158 Benchmark]: RCFGBuilder took 634.22ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 25.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:47:54,166 INFO L158 Benchmark]: TraceAbstraction took 352356.88ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 25.3MB in the beginning and 27.5MB in the end (delta: -2.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-12 22:47:54,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 38.0MB in the beginning and 37.9MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.89ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 39.9MB in the end (delta: -5.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.75ms. Allocated memory is still 56.6MB. Free memory was 39.9MB in the beginning and 38.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.56ms. Allocated memory is still 56.6MB. Free memory was 38.3MB in the beginning and 37.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 634.22ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 25.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 352356.88ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 25.3MB in the beginning and 27.5MB in the end (delta: -2.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:47:54,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cd6a4-38f1-48bc-9f36-c72d7a474944/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null