./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9 --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 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:57:53,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:57:53,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:57:53,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:57:53,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:57:53,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:57:53,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:57:53,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:57:53,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:57:53,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:57:53,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:57:53,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:57:53,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:57:53,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:57:53,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:57:53,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:57:53,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:57:53,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:57:53,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:57:53,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:57:53,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:57:53,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:57:53,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:57:53,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:57:53,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:57:53,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:57:53,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:57:53,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:57:53,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:57:53,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:57:53,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:57:53,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:57:53,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:57:53,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:57:53,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:57:53,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:57:53,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:57:53,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:57:53,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:57:53,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:57:53,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:57:53,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:57:53,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:57:53,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:57:53,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:57:53,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:57:53,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:57:53,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:57:53,727 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:57:53,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:57:53,728 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:57:53,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:57:53,729 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:57:53,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:57:53,730 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:57:53,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:57:53,730 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:57:53,730 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:57:53,730 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:57:53,731 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:57:53,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:57:53,732 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:57:53,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:57:53,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:57:53,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:57:53,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:57:53,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:57:53,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:57:53,734 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:57:53,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:57:53,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:57:53,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:57:53,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:57:53,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:57:53,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:57:53,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:57:53,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:57:53,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:57:53,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:57:53,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:57:53,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:57:53,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:57:53,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:57:53,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 [2022-11-20 20:57:54,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:57:54,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:57:54,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:57:54,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:57:54,165 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:57:54,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2022-11-20 20:57:57,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:57:57,840 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:57:57,841 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2022-11-20 20:57:57,864 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/data/370392f0c/0bdd95a2de0246e29d7149540d396379/FLAG9428820dc [2022-11-20 20:57:57,888 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/data/370392f0c/0bdd95a2de0246e29d7149540d396379 [2022-11-20 20:57:57,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:57:57,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:57:57,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:57:57,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:57:57,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:57:57,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:57" (1/1) ... [2022-11-20 20:57:57,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b5ccbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:57, skipping insertion in model container [2022-11-20 20:57:57,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:57:57" (1/1) ... [2022-11-20 20:57:57,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:57:58,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:57:58,828 WARN L237 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_742930cb-4599-4c2e-addf-a18ed9112e92/sv-benchmarks/c/eca-rers2012/Problem03_label14.c[57171,57184] [2022-11-20 20:57:58,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:57:58,883 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:57:59,140 WARN L237 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_742930cb-4599-4c2e-addf-a18ed9112e92/sv-benchmarks/c/eca-rers2012/Problem03_label14.c[57171,57184] [2022-11-20 20:57:59,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:57:59,175 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:57:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59 WrapperNode [2022-11-20 20:57:59,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:57:59,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:57:59,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:57:59,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:57:59,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,351 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-20 20:57:59,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:57:59,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:57:59,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:57:59,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:57:59,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:57:59,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:57:59,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:57:59,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:57:59,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (1/1) ... [2022-11-20 20:57:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:57:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:57:59,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:57:59,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:57:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:57:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:57:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:57:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:57:59,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:57:59,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:58:01,940 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:58:02,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:58:02,366 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:58:02,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:58:02 BoogieIcfgContainer [2022-11-20 20:58:02,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:58:02,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:58:02,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:58:02,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:58:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:57:57" (1/3) ... [2022-11-20 20:58:02,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdc1ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:58:02, skipping insertion in model container [2022-11-20 20:58:02,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:57:59" (2/3) ... [2022-11-20 20:58:02,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdc1ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:58:02, skipping insertion in model container [2022-11-20 20:58:02,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:58:02" (3/3) ... [2022-11-20 20:58:02,387 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2022-11-20 20:58:02,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:58:02,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:58:02,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:58:02,504 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22fc517b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:58:02,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:58:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 20:58:02,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:02,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:02,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:02,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash 209343671, now seen corresponding path program 1 times [2022-11-20 20:58:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:02,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321979921] [2022-11-20 20:58:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:02,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:03,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:03,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321979921] [2022-11-20 20:58:03,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321979921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:03,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:03,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008577406] [2022-11-20 20:58:03,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:03,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:03,650 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:04,838 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2022-11-20 20:58:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-11-20 20:58:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:04,853 INFO L225 Difference]: With dead ends: 440 [2022-11-20 20:58:04,853 INFO L226 Difference]: Without dead ends: 289 [2022-11-20 20:58:04,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:04,862 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:04,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 47 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:58:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-20 20:58:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-20 20:58:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.8055555555555556) internal successors, (520), 288 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 520 transitions. [2022-11-20 20:58:04,947 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 520 transitions. Word has length 143 [2022-11-20 20:58:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 520 transitions. [2022-11-20 20:58:04,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 520 transitions. [2022-11-20 20:58:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 20:58:04,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:04,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:58:04,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1322619553, now seen corresponding path program 1 times [2022-11-20 20:58:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:04,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177752171] [2022-11-20 20:58:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:05,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:05,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177752171] [2022-11-20 20:58:05,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177752171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:05,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:05,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:05,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577138571] [2022-11-20 20:58:05,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:05,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:05,373 INFO L87 Difference]: Start difference. First operand 289 states and 520 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:06,458 INFO L93 Difference]: Finished difference Result 865 states and 1558 transitions. [2022-11-20 20:58:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-20 20:58:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:06,461 INFO L225 Difference]: With dead ends: 865 [2022-11-20 20:58:06,462 INFO L226 Difference]: Without dead ends: 577 [2022-11-20 20:58:06,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:06,465 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 166 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:06,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 69 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:58:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-20 20:58:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2022-11-20 20:58:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.6742160278745644) internal successors, (961), 574 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 961 transitions. [2022-11-20 20:58:06,495 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 961 transitions. Word has length 148 [2022-11-20 20:58:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:06,496 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 961 transitions. [2022-11-20 20:58:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 961 transitions. [2022-11-20 20:58:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-20 20:58:06,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:06,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:58:06,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1094383958, now seen corresponding path program 1 times [2022-11-20 20:58:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:06,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805796974] [2022-11-20 20:58:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:06,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:06,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:06,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805796974] [2022-11-20 20:58:06,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805796974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:06,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:06,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594932977] [2022-11-20 20:58:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:06,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:06,744 INFO L87 Difference]: Start difference. First operand 575 states and 961 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:07,886 INFO L93 Difference]: Finished difference Result 1721 states and 2880 transitions. [2022-11-20 20:58:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:07,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-11-20 20:58:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:07,892 INFO L225 Difference]: With dead ends: 1721 [2022-11-20 20:58:07,892 INFO L226 Difference]: Without dead ends: 1147 [2022-11-20 20:58:07,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:07,896 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 157 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:07,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 25 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:58:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-20 20:58:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2022-11-20 20:58:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.6265270506108203) internal successors, (1864), 1146 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1864 transitions. [2022-11-20 20:58:07,940 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1864 transitions. Word has length 151 [2022-11-20 20:58:07,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:07,941 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1864 transitions. [2022-11-20 20:58:07,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1864 transitions. [2022-11-20 20:58:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 20:58:07,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:07,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:07,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:58:07,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1051103491, now seen corresponding path program 1 times [2022-11-20 20:58:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269990100] [2022-11-20 20:58:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:08,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269990100] [2022-11-20 20:58:08,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269990100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:08,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:08,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:58:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681257911] [2022-11-20 20:58:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:08,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:08,277 INFO L87 Difference]: Start difference. First operand 1147 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:09,370 INFO L93 Difference]: Finished difference Result 3437 states and 5589 transitions. [2022-11-20 20:58:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-11-20 20:58:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:09,381 INFO L225 Difference]: With dead ends: 3437 [2022-11-20 20:58:09,381 INFO L226 Difference]: Without dead ends: 2291 [2022-11-20 20:58:09,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:09,395 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 153 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:09,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 258 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:58:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-11-20 20:58:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2022-11-20 20:58:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2290 states have (on average 1.4026200873362444) internal successors, (3212), 2290 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3212 transitions. [2022-11-20 20:58:09,459 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3212 transitions. Word has length 163 [2022-11-20 20:58:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:09,461 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3212 transitions. [2022-11-20 20:58:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3212 transitions. [2022-11-20 20:58:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 20:58:09,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:09,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:09,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:58:09,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash -520475287, now seen corresponding path program 1 times [2022-11-20 20:58:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:09,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603937122] [2022-11-20 20:58:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:09,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:09,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603937122] [2022-11-20 20:58:09,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603937122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:09,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:09,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:58:09,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677565222] [2022-11-20 20:58:09,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:09,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:09,948 INFO L87 Difference]: Start difference. First operand 2291 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:10,940 INFO L93 Difference]: Finished difference Result 5725 states and 7996 transitions. [2022-11-20 20:58:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-11-20 20:58:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:10,952 INFO L225 Difference]: With dead ends: 5725 [2022-11-20 20:58:10,952 INFO L226 Difference]: Without dead ends: 3435 [2022-11-20 20:58:10,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:10,962 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:10,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 265 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:58:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2022-11-20 20:58:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2022-11-20 20:58:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3434 states have (on average 1.340128130460105) internal successors, (4602), 3434 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4602 transitions. [2022-11-20 20:58:11,054 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4602 transitions. Word has length 171 [2022-11-20 20:58:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:11,056 INFO L495 AbstractCegarLoop]: Abstraction has 3435 states and 4602 transitions. [2022-11-20 20:58:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4602 transitions. [2022-11-20 20:58:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 20:58:11,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:11,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:58:11,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 441259069, now seen corresponding path program 1 times [2022-11-20 20:58:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:11,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051184584] [2022-11-20 20:58:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:58:11,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:11,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051184584] [2022-11-20 20:58:11,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051184584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:11,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:11,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621017849] [2022-11-20 20:58:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:11,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:11,354 INFO L87 Difference]: Start difference. First operand 3435 states and 4602 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:11,922 INFO L93 Difference]: Finished difference Result 6869 states and 9203 transitions. [2022-11-20 20:58:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:11,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2022-11-20 20:58:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:11,938 INFO L225 Difference]: With dead ends: 6869 [2022-11-20 20:58:11,939 INFO L226 Difference]: Without dead ends: 3435 [2022-11-20 20:58:11,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:11,947 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:11,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 4 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:58:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2022-11-20 20:58:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2022-11-20 20:58:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3434 states have (on average 1.3098427489807805) internal successors, (4498), 3434 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4498 transitions. [2022-11-20 20:58:12,052 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4498 transitions. Word has length 176 [2022-11-20 20:58:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:12,053 INFO L495 AbstractCegarLoop]: Abstraction has 3435 states and 4498 transitions. [2022-11-20 20:58:12,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4498 transitions. [2022-11-20 20:58:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-20 20:58:12,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:12,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:12,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:58:12,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1441034555, now seen corresponding path program 1 times [2022-11-20 20:58:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:12,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882139510] [2022-11-20 20:58:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:12,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:12,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:12,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882139510] [2022-11-20 20:58:12,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882139510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:12,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005495854] [2022-11-20 20:58:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:12,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:12,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:12,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:58:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:12,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:13,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:13,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:13,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005495854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:13,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:13,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 20:58:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462163033] [2022-11-20 20:58:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:13,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:13,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:13,351 INFO L87 Difference]: Start difference. First operand 3435 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:14,371 INFO L93 Difference]: Finished difference Result 8728 states and 11507 transitions. [2022-11-20 20:58:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:14,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-11-20 20:58:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:14,396 INFO L225 Difference]: With dead ends: 8728 [2022-11-20 20:58:14,396 INFO L226 Difference]: Without dead ends: 5294 [2022-11-20 20:58:14,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:14,401 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:14,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 294 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:58:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2022-11-20 20:58:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5294. [2022-11-20 20:58:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 1.303608539580578) internal successors, (6900), 5293 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 6900 transitions. [2022-11-20 20:58:14,544 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 6900 transitions. Word has length 181 [2022-11-20 20:58:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:14,546 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 6900 transitions. [2022-11-20 20:58:14,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 6900 transitions. [2022-11-20 20:58:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-20 20:58:14,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:14,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:14,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:14,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 20:58:14,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2067557920, now seen corresponding path program 1 times [2022-11-20 20:58:14,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:14,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558753839] [2022-11-20 20:58:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:14,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:15,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558753839] [2022-11-20 20:58:15,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558753839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:15,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:15,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153340978] [2022-11-20 20:58:15,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:15,435 INFO L87 Difference]: Start difference. First operand 5294 states and 6900 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:16,376 INFO L93 Difference]: Finished difference Result 12446 states and 16213 transitions. [2022-11-20 20:58:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:16,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2022-11-20 20:58:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:16,401 INFO L225 Difference]: With dead ends: 12446 [2022-11-20 20:58:16,401 INFO L226 Difference]: Without dead ends: 7153 [2022-11-20 20:58:16,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:16,409 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 116 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:16,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 79 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:58:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2022-11-20 20:58:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7153. [2022-11-20 20:58:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 7152 states have (on average 1.2918064876957494) internal successors, (9239), 7152 states have internal predecessors, (9239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 9239 transitions. [2022-11-20 20:58:16,638 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 9239 transitions. Word has length 184 [2022-11-20 20:58:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:16,638 INFO L495 AbstractCegarLoop]: Abstraction has 7153 states and 9239 transitions. [2022-11-20 20:58:16,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 9239 transitions. [2022-11-20 20:58:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-20 20:58:16,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:16,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:16,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:58:16,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:16,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1304633093, now seen corresponding path program 1 times [2022-11-20 20:58:16,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:16,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000928841] [2022-11-20 20:58:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:17,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:17,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000928841] [2022-11-20 20:58:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000928841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848367842] [2022-11-20 20:58:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:17,299 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:58:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:17,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:58:17,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:17,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:17,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848367842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:17,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:17,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 20:58:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818545549] [2022-11-20 20:58:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:17,815 INFO L87 Difference]: Start difference. First operand 7153 states and 9239 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:18,692 INFO L93 Difference]: Finished difference Result 15735 states and 20724 transitions. [2022-11-20 20:58:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-11-20 20:58:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:18,723 INFO L225 Difference]: With dead ends: 15735 [2022-11-20 20:58:18,724 INFO L226 Difference]: Without dead ends: 8869 [2022-11-20 20:58:18,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:18,734 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:18,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 16 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:58:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2022-11-20 20:58:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8869. [2022-11-20 20:58:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8869 states, 8868 states have (on average 1.3346865133062698) internal successors, (11836), 8868 states have internal predecessors, (11836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8869 states to 8869 states and 11836 transitions. [2022-11-20 20:58:18,938 INFO L78 Accepts]: Start accepts. Automaton has 8869 states and 11836 transitions. Word has length 191 [2022-11-20 20:58:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:18,939 INFO L495 AbstractCegarLoop]: Abstraction has 8869 states and 11836 transitions. [2022-11-20 20:58:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 8869 states and 11836 transitions. [2022-11-20 20:58:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 20:58:18,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:18,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:18,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:19,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:19,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1816296061, now seen corresponding path program 1 times [2022-11-20 20:58:19,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:19,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17403438] [2022-11-20 20:58:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:19,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 20:58:19,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:19,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17403438] [2022-11-20 20:58:19,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17403438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:19,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415978788] [2022-11-20 20:58:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:19,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:19,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:58:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:58:20,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:20,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:20,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415978788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:20,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:20,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-20 20:58:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742950875] [2022-11-20 20:58:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:20,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:20,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:20,386 INFO L87 Difference]: Start difference. First operand 8869 states and 11836 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:21,401 INFO L93 Difference]: Finished difference Result 20311 states and 27549 transitions. [2022-11-20 20:58:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2022-11-20 20:58:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:21,428 INFO L225 Difference]: With dead ends: 20311 [2022-11-20 20:58:21,429 INFO L226 Difference]: Without dead ends: 11586 [2022-11-20 20:58:21,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:58:21,442 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 94 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:21,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 86 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:58:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2022-11-20 20:58:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11586. [2022-11-20 20:58:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 11585 states have (on average 1.2844195079844627) internal successors, (14880), 11585 states have internal predecessors, (14880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 14880 transitions. [2022-11-20 20:58:21,822 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 14880 transitions. Word has length 252 [2022-11-20 20:58:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:21,823 INFO L495 AbstractCegarLoop]: Abstraction has 11586 states and 14880 transitions. [2022-11-20 20:58:21,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 14880 transitions. [2022-11-20 20:58:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 20:58:21,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:21,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:21,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:22,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 20:58:22,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -945840320, now seen corresponding path program 1 times [2022-11-20 20:58:22,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:22,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068350014] [2022-11-20 20:58:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:22,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:22,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:22,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068350014] [2022-11-20 20:58:22,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068350014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:22,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:22,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562648153] [2022-11-20 20:58:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:22,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:22,811 INFO L87 Difference]: Start difference. First operand 11586 states and 14880 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:23,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:23,975 INFO L93 Difference]: Finished difference Result 26460 states and 34008 transitions. [2022-11-20 20:58:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2022-11-20 20:58:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:24,003 INFO L225 Difference]: With dead ends: 26460 [2022-11-20 20:58:24,003 INFO L226 Difference]: Without dead ends: 15018 [2022-11-20 20:58:24,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:24,016 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:24,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:58:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15018 states. [2022-11-20 20:58:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15018 to 14303. [2022-11-20 20:58:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14303 states, 14302 states have (on average 1.2742273807859041) internal successors, (18224), 14302 states have internal predecessors, (18224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14303 states to 14303 states and 18224 transitions. [2022-11-20 20:58:24,333 INFO L78 Accepts]: Start accepts. Automaton has 14303 states and 18224 transitions. Word has length 267 [2022-11-20 20:58:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:24,333 INFO L495 AbstractCegarLoop]: Abstraction has 14303 states and 18224 transitions. [2022-11-20 20:58:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 14303 states and 18224 transitions. [2022-11-20 20:58:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-20 20:58:24,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:24,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:24,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:58:24,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2073355333, now seen corresponding path program 1 times [2022-11-20 20:58:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:24,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607820457] [2022-11-20 20:58:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:26,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:26,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607820457] [2022-11-20 20:58:26,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607820457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:26,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962068485] [2022-11-20 20:58:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:26,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:26,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:58:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:27,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:27,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:28,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:28,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962068485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:28,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:28,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 20:58:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140969853] [2022-11-20 20:58:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:28,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:58:28,813 INFO L87 Difference]: Start difference. First operand 14303 states and 18224 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:29,984 INFO L93 Difference]: Finished difference Result 33324 states and 42729 transitions. [2022-11-20 20:58:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:29,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-11-20 20:58:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:30,029 INFO L225 Difference]: With dead ends: 33324 [2022-11-20 20:58:30,029 INFO L226 Difference]: Without dead ends: 19165 [2022-11-20 20:58:30,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:58:30,046 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:30,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:58:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2022-11-20 20:58:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 19165. [2022-11-20 20:58:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19165 states, 19164 states have (on average 1.2648716343143394) internal successors, (24240), 19164 states have internal predecessors, (24240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 24240 transitions. [2022-11-20 20:58:30,488 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 24240 transitions. Word has length 274 [2022-11-20 20:58:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:30,489 INFO L495 AbstractCegarLoop]: Abstraction has 19165 states and 24240 transitions. [2022-11-20 20:58:30,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 24240 transitions. [2022-11-20 20:58:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-20 20:58:30,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:30,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:30,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:30,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:30,736 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash -177846044, now seen corresponding path program 1 times [2022-11-20 20:58:30,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502370527] [2022-11-20 20:58:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 20:58:31,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502370527] [2022-11-20 20:58:31,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502370527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:31,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:31,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:31,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603871747] [2022-11-20 20:58:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:31,229 INFO L87 Difference]: Start difference. First operand 19165 states and 24240 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:32,230 INFO L93 Difference]: Finished difference Result 43477 states and 54980 transitions. [2022-11-20 20:58:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:32,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-11-20 20:58:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:32,284 INFO L225 Difference]: With dead ends: 43477 [2022-11-20 20:58:32,284 INFO L226 Difference]: Without dead ends: 24456 [2022-11-20 20:58:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:32,301 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 84 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:32,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 48 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:58:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24456 states. [2022-11-20 20:58:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24456 to 23169. [2022-11-20 20:58:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23169 states, 23168 states have (on average 1.2714088397790055) internal successors, (29456), 23168 states have internal predecessors, (29456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23169 states to 23169 states and 29456 transitions. [2022-11-20 20:58:32,917 INFO L78 Accepts]: Start accepts. Automaton has 23169 states and 29456 transitions. Word has length 285 [2022-11-20 20:58:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:32,918 INFO L495 AbstractCegarLoop]: Abstraction has 23169 states and 29456 transitions. [2022-11-20 20:58:32,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23169 states and 29456 transitions. [2022-11-20 20:58:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 20:58:32,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:32,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:58:32,965 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1144953518, now seen corresponding path program 1 times [2022-11-20 20:58:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172296023] [2022-11-20 20:58:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:33,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172296023] [2022-11-20 20:58:33,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172296023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:33,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:33,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:58:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509248321] [2022-11-20 20:58:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:33,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:33,302 INFO L87 Difference]: Start difference. First operand 23169 states and 29456 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:34,390 INFO L93 Difference]: Finished difference Result 51914 states and 66125 transitions. [2022-11-20 20:58:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2022-11-20 20:58:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:34,441 INFO L225 Difference]: With dead ends: 51914 [2022-11-20 20:58:34,441 INFO L226 Difference]: Without dead ends: 28746 [2022-11-20 20:58:34,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:34,458 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 122 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:34,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 219 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:58:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28746 states. [2022-11-20 20:58:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28746 to 27030. [2022-11-20 20:58:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27030 states, 27029 states have (on average 1.2306041658958895) internal successors, (33262), 27029 states have internal predecessors, (33262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27030 states to 27030 states and 33262 transitions. [2022-11-20 20:58:35,099 INFO L78 Accepts]: Start accepts. Automaton has 27030 states and 33262 transitions. Word has length 300 [2022-11-20 20:58:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:35,100 INFO L495 AbstractCegarLoop]: Abstraction has 27030 states and 33262 transitions. [2022-11-20 20:58:35,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 27030 states and 33262 transitions. [2022-11-20 20:58:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-20 20:58:35,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:35,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:35,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:58:35,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash 131604195, now seen corresponding path program 1 times [2022-11-20 20:58:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457781943] [2022-11-20 20:58:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:58:36,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:36,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457781943] [2022-11-20 20:58:36,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457781943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100926338] [2022-11-20 20:58:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:36,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:36,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:36,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:58:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:36,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:36,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:36,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:36,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100926338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:36,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:36,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 20:58:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091929933] [2022-11-20 20:58:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:36,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:58:36,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:36,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:58:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:58:36,882 INFO L87 Difference]: Start difference. First operand 27030 states and 33262 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:38,587 INFO L93 Difference]: Finished difference Result 55203 states and 67666 transitions. [2022-11-20 20:58:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:58:38,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2022-11-20 20:58:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:38,628 INFO L225 Difference]: With dead ends: 55203 [2022-11-20 20:58:38,628 INFO L226 Difference]: Without dead ends: 28174 [2022-11-20 20:58:38,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:58:38,649 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 205 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:38,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 198 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 20:58:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28174 states. [2022-11-20 20:58:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28174 to 23741. [2022-11-20 20:58:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23741 states, 23740 states have (on average 1.2054338668913227) internal successors, (28617), 23740 states have internal predecessors, (28617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23741 states to 23741 states and 28617 transitions. [2022-11-20 20:58:39,392 INFO L78 Accepts]: Start accepts. Automaton has 23741 states and 28617 transitions. Word has length 332 [2022-11-20 20:58:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:39,394 INFO L495 AbstractCegarLoop]: Abstraction has 23741 states and 28617 transitions. [2022-11-20 20:58:39,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23741 states and 28617 transitions. [2022-11-20 20:58:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-20 20:58:39,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:39,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:39,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 20:58:39,643 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1589683833, now seen corresponding path program 1 times [2022-11-20 20:58:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:39,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229538204] [2022-11-20 20:58:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 197 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 20:58:41,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229538204] [2022-11-20 20:58:41,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229538204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969461110] [2022-11-20 20:58:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:41,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:41,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:41,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:58:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:42,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:58:42,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:58:42,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969461110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:42,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:58:42,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 20:58:42,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752865747] [2022-11-20 20:58:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:58:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:58:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:58:42,759 INFO L87 Difference]: Start difference. First operand 23741 states and 28617 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:44,109 INFO L93 Difference]: Finished difference Result 48913 states and 58806 transitions. [2022-11-20 20:58:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:58:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2022-11-20 20:58:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:44,239 INFO L225 Difference]: With dead ends: 48913 [2022-11-20 20:58:44,240 INFO L226 Difference]: Without dead ends: 25173 [2022-11-20 20:58:44,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:58:44,252 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 239 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 213 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:58:44,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25173 states. [2022-11-20 20:58:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25173 to 24313. [2022-11-20 20:58:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24313 states, 24312 states have (on average 1.2004359986837776) internal successors, (29185), 24312 states have internal predecessors, (29185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24313 states to 24313 states and 29185 transitions. [2022-11-20 20:58:44,731 INFO L78 Accepts]: Start accepts. Automaton has 24313 states and 29185 transitions. Word has length 335 [2022-11-20 20:58:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:44,733 INFO L495 AbstractCegarLoop]: Abstraction has 24313 states and 29185 transitions. [2022-11-20 20:58:44,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 24313 states and 29185 transitions. [2022-11-20 20:58:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-20 20:58:44,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:44,765 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:44,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:58:44,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 20:58:44,973 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -161919156, now seen corresponding path program 1 times [2022-11-20 20:58:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889040259] [2022-11-20 20:58:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 20:58:45,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889040259] [2022-11-20 20:58:45,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889040259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:45,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:58:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014360054] [2022-11-20 20:58:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:45,289 INFO L87 Difference]: Start difference. First operand 24313 states and 29185 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:46,286 INFO L93 Difference]: Finished difference Result 51628 states and 61967 transitions. [2022-11-20 20:58:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2022-11-20 20:58:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:46,314 INFO L225 Difference]: With dead ends: 51628 [2022-11-20 20:58:46,314 INFO L226 Difference]: Without dead ends: 27316 [2022-11-20 20:58:46,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:46,329 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 108 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:46,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 78 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:58:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27316 states. [2022-11-20 20:58:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27316 to 27030. [2022-11-20 20:58:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27030 states, 27029 states have (on average 1.1572755188871213) internal successors, (31280), 27029 states have internal predecessors, (31280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27030 states to 27030 states and 31280 transitions. [2022-11-20 20:58:46,719 INFO L78 Accepts]: Start accepts. Automaton has 27030 states and 31280 transitions. Word has length 366 [2022-11-20 20:58:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:46,720 INFO L495 AbstractCegarLoop]: Abstraction has 27030 states and 31280 transitions. [2022-11-20 20:58:46,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 27030 states and 31280 transitions. [2022-11-20 20:58:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-20 20:58:46,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:46,754 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 20:58:46,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash -420418771, now seen corresponding path program 1 times [2022-11-20 20:58:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:46,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766906973] [2022-11-20 20:58:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 20:58:47,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766906973] [2022-11-20 20:58:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766906973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:58:47,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:58:47,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:58:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656284139] [2022-11-20 20:58:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:58:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:58:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:58:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:58:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:47,142 INFO L87 Difference]: Start difference. First operand 27030 states and 31280 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:47,918 INFO L93 Difference]: Finished difference Result 67789 states and 78407 transitions. [2022-11-20 20:58:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:58:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2022-11-20 20:58:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:47,960 INFO L225 Difference]: With dead ends: 67789 [2022-11-20 20:58:47,960 INFO L226 Difference]: Without dead ends: 40760 [2022-11-20 20:58:47,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:58:47,977 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 123 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:47,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 269 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:58:48,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40760 states. [2022-11-20 20:58:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40760 to 40758. [2022-11-20 20:58:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40758 states, 40757 states have (on average 1.1551144588659616) internal successors, (47079), 40757 states have internal predecessors, (47079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40758 states to 40758 states and 47079 transitions. [2022-11-20 20:58:48,543 INFO L78 Accepts]: Start accepts. Automaton has 40758 states and 47079 transitions. Word has length 378 [2022-11-20 20:58:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:48,543 INFO L495 AbstractCegarLoop]: Abstraction has 40758 states and 47079 transitions. [2022-11-20 20:58:48,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:58:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 40758 states and 47079 transitions. [2022-11-20 20:58:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-20 20:58:48,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:48,593 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:48,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 20:58:48,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:48,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash -548726124, now seen corresponding path program 1 times [2022-11-20 20:58:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:48,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206521905] [2022-11-20 20:58:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:48,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 435 proven. 24 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 20:58:50,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:50,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206521905] [2022-11-20 20:58:50,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206521905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:50,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441839913] [2022-11-20 20:58:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:50,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:50,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:50,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:58:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:50,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:50,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 319 proven. 194 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 20:58:51,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:58:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 319 proven. 194 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-20 20:58:52,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441839913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:58:52,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1859858562] [2022-11-20 20:58:52,195 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2022-11-20 20:58:52,195 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:58:52,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:58:52,208 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:58:52,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:08:05,807 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2022-11-20 21:08:06,325 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 49312 conjuctions. This might take some time... [2022-11-20 21:08:12,144 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 784 conjuctions. [2022-11-20 21:08:12,181 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2022-11-20 21:08:12,643 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 49312 conjuctions. This might take some time... [2022-11-20 21:08:18,338 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 784 conjuctions. [2022-11-20 21:08:20,069 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2022-11-20 21:08:20,579 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 49312 conjuctions. This might take some time... [2022-11-20 21:08:26,930 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 784 conjuctions. [2022-11-20 21:09:01,208 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:09:48,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '716019#(and (<= 26 ~z~0) (<= 5 ~e~0) (<= 25 ~y~0) (<= ~a0~0 1) (<= ~a7~0 0) (<= ~c~0 3) (<= ~e~0 5) (<= 6 ~f~0) (<= 0 |#NULL.base|) (<= ~a1~0 1) (<= ~w~0 23) (<= ~u~0 21) (<= 1 ~a1~0) (<= 1 ~a16~0) (<= |ULTIMATE.start_calculate_output_~input#1| 6) (<= ~a10~0 1) (<= 1 |ULTIMATE.start_calculate_output_~input#1|) (<= |ULTIMATE.start_main_~input~0#1| 6) (<= ~a20~0 0) (<= ~a27~0 1) (<= 0 ~a7~0) (<= ~a9~0 1) (<= ~a4~0 1) (<= 0 ~a17~0) (<= 0 ~a23~0) (<= 0 ~a20~0) (<= ~a13~0 1) (= ~a5~0 1) (<= 0 ~a14~0) (<= ~x~0 24) (<= ~b~0 2) (<= ~a2~0 0) (<= 1 ~a22~0) (<= 1 ~a4~0) (<= ~a21~0 1) (<= 3 ~c~0) (<= 1 ~a24~0) (not (= ~a26~0 1)) (<= 1 ~a0~0) (not (= ~a27~0 1)) (<= ~a28~0 1) (<= |ULTIMATE.start_calculate_output_#in~input#1| 6) (<= 0 ~a12~0) (<= 1 ~a21~0) (<= 0 ~a19~0) (<= |#NULL.offset| 0) (<= ~v~0 22) (<= ~a15~0 1) (<= ~a22~0 1) (<= 1 |ULTIMATE.start_main_~input~0#1|) (= ~a11~0 1) (<= ~a~0 1) (<= 4 ~d~0) (<= 23 ~w~0) (<= ~a17~0 0) (<= ~a23~0 0) (<= ~a24~0 1) (<= ~z~0 26) (<= 21 ~u~0) (<= 2 ~b~0) (<= 0 (+ |ULTIMATE.start_main_~output~0#1| 1)) (<= 1 |ULTIMATE.start_calculate_output_#in~input#1|) (not (= ~a12~0 1)) (<= 1 ~a9~0) (<= |#NULL.base| 0) (<= ~a8~0 0) (<= ~a14~0 0) (<= 1 ~a29~0) (<= ~y~0 25) (<= 1 ~a13~0) (<= 1 ~a28~0) (<= 0 ~a6~0) (<= 1 ~a~0) (<= 22 ~v~0) (<= 1 ~a10~0) (<= 0 ~a2~0) (<= 1 ~a15~0) (<= 0 |#NULL.offset|) (<= ~d~0 4) (<= 0 |#StackHeapBarrier|) (= ~a3~0 0) (= ~a18~0 1) (<= ~a25~0 0) (<= ~a29~0 1) (<= 0 ~a8~0) (<= ~f~0 6) (<= 0 ~a26~0) (<= ~a16~0 1) (<= ~a6~0 0) (<= 0 ~a25~0) (<= 24 ~x~0) (<= ~a19~0 0))' at error location [2022-11-20 21:09:48,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:09:48,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:09:48,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-11-20 21:09:48,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226387199] [2022-11-20 21:09:48,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:09:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:09:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:09:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:09:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-20 21:09:48,609 INFO L87 Difference]: Start difference. First operand 40758 states and 47079 transitions. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:09:56,391 INFO L93 Difference]: Finished difference Result 143273 states and 164181 transitions. [2022-11-20 21:09:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 21:09:56,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2022-11-20 21:09:56,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:09:56,393 INFO L225 Difference]: With dead ends: 143273 [2022-11-20 21:09:56,393 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:09:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 956 SyntacticMatches, 423 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4227 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 21:09:56,456 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2293 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4690 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 5494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:09:56,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 81 Invalid, 5494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4690 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 21:09:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:09:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:09:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:09:56,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 463 [2022-11-20 21:09:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:09:56,458 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:09:56,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 8 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:09:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:09:56,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:09:56,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:09:56,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 21:09:56,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:09:56,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:10:39,053 WARN L233 SmtUtils]: Spent 42.37s on a formula simplification. DAG size of input: 827 DAG size of output: 807 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 21:11:18,844 WARN L233 SmtUtils]: Spent 39.78s on a formula simplification. DAG size of input: 827 DAG size of output: 807 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 21:11:34,490 WARN L233 SmtUtils]: Spent 15.62s on a formula simplification. DAG size of input: 807 DAG size of output: 82 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 21:11:50,033 WARN L233 SmtUtils]: Spent 15.53s on a formula simplification. DAG size of input: 807 DAG size of output: 82 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L1555(line 1555) no Hoare annotation was computed. [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,037 INFO L899 garLoopResultBuilder]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,038 INFO L899 garLoopResultBuilder]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,039 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,040 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,041 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,042 INFO L899 garLoopResultBuilder]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,043 INFO L899 garLoopResultBuilder]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,044 INFO L899 garLoopResultBuilder]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,045 INFO L899 garLoopResultBuilder]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,046 INFO L899 garLoopResultBuilder]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1555) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,047 INFO L899 garLoopResultBuilder]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,048 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,049 INFO L899 garLoopResultBuilder]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,050 INFO L895 garLoopResultBuilder]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse6 (= ~a3~0 0)) (.cse8 (= ~a26~0 1)) (.cse0 (= ~a5~0 1)) (.cse16 (<= ~a3~0 1)) (.cse17 (<= 1 ~a3~0)) (.cse11 (<= ~a11~0 0)) (.cse9 (= ~a12~0 1)) (.cse10 (= ~a6~0 0)) (.cse3 (= ~a6~0 1)) (.cse4 (= ~a27~0 1))) (let ((.cse13 (<= ~a7~0 0)) (.cse15 (not .cse4)) (.cse18 (= ~a8~0 1)) (.cse19 (or (and .cse10 .cse4) (and (= ~a27~0 0) .cse3))) (.cse2 (= ~a11~0 1)) (.cse12 (not .cse9)) (.cse14 (= ~a8~0 0)) (.cse20 (or (and .cse8 .cse0 .cse11 .cse4 .cse6) (and .cse8 .cse0 .cse16 .cse17 .cse11 .cse4))) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a22~0 1)) (.cse7 (= ~a18~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse10 .cse11 .cse4 .cse6 .cse7) (and .cse8 .cse0 .cse1 .cse3 .cse12 .cse11 .cse5 .cse7) (and .cse13 .cse0 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse9 (not .cse8) .cse14 .cse15 .cse1 .cse10 .cse11 .cse6 .cse7) (and .cse8 .cse0 .cse16 .cse17 .cse2 .cse3 .cse12 .cse4 .cse7) (and .cse0 .cse17 .cse1 .cse5 .cse7 (or .cse2 .cse3)) (and .cse8 .cse0 .cse9 .cse1 .cse10 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse2 .cse10 .cse18 .cse6 .cse7) (and .cse0 .cse1 .cse3 .cse11 .cse4 .cse5 .cse7) (and .cse8 .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse16 .cse17 .cse1 .cse10 .cse11 .cse4 .cse7) (and .cse13 .cse0 .cse9 .cse15 .cse10 (not .cse2) .cse5 .cse6 .cse7) (and .cse0 .cse16 .cse17 .cse1 .cse10 .cse12 .cse5 .cse7) (and .cse8 .cse0 .cse9 .cse17 .cse1 .cse10 .cse5 .cse7) (and .cse8 .cse0 .cse1 .cse2 .cse12 .cse5 .cse7) (and .cse0 .cse19 .cse1 (or .cse3 .cse18) .cse5 .cse7) (and .cse2 (or (and .cse8 .cse0 .cse16 .cse17 .cse10 .cse4) (and .cse8 .cse0 .cse10 .cse4 .cse6)) .cse12 .cse7) (and .cse8 .cse0 .cse19 .cse1 .cse11 .cse5 .cse7) (and .cse8 .cse0 .cse2 .cse3 .cse4 .cse6 .cse7) (and .cse0 .cse1 .cse10 .cse12 .cse4 .cse5 .cse7) (and .cse14 .cse3 .cse20 .cse5 .cse7) (and .cse1 .cse3 .cse20 .cse7) (and .cse8 .cse0 .cse1 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse1 .cse3 .cse11 .cse5 .cse6 .cse7)))) [2022-11-20 21:11:50,050 INFO L899 garLoopResultBuilder]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,050 INFO L899 garLoopResultBuilder]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,050 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,051 INFO L899 garLoopResultBuilder]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,051 INFO L902 garLoopResultBuilder]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2022-11-20 21:11:50,051 INFO L899 garLoopResultBuilder]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,051 INFO L899 garLoopResultBuilder]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,051 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,051 INFO L899 garLoopResultBuilder]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,052 INFO L899 garLoopResultBuilder]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,053 INFO L899 garLoopResultBuilder]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,053 INFO L899 garLoopResultBuilder]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,053 INFO L899 garLoopResultBuilder]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,054 INFO L895 garLoopResultBuilder]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse6 (= ~a3~0 0)) (.cse8 (= ~a26~0 1)) (.cse0 (= ~a5~0 1)) (.cse16 (<= ~a3~0 1)) (.cse17 (<= 1 ~a3~0)) (.cse11 (<= ~a11~0 0)) (.cse9 (= ~a12~0 1)) (.cse10 (= ~a6~0 0)) (.cse3 (= ~a6~0 1)) (.cse4 (= ~a27~0 1))) (let ((.cse13 (<= ~a7~0 0)) (.cse15 (not .cse4)) (.cse18 (= ~a8~0 1)) (.cse19 (or (and .cse10 .cse4) (and (= ~a27~0 0) .cse3))) (.cse2 (= ~a11~0 1)) (.cse12 (not .cse9)) (.cse14 (= ~a8~0 0)) (.cse20 (or (and .cse8 .cse0 .cse11 .cse4 .cse6) (and .cse8 .cse0 .cse16 .cse17 .cse11 .cse4))) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a22~0 1)) (.cse7 (= ~a18~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse10 .cse11 .cse4 .cse6 .cse7) (and .cse8 .cse0 .cse1 .cse3 .cse12 .cse11 .cse5 .cse7) (and .cse13 .cse0 .cse3 .cse5 .cse6 .cse7) (and .cse0 .cse9 (not .cse8) .cse14 .cse15 .cse1 .cse10 .cse11 .cse6 .cse7) (and .cse8 .cse0 .cse16 .cse17 .cse2 .cse3 .cse12 .cse4 .cse7) (and .cse0 .cse17 .cse1 .cse5 .cse7 (or .cse2 .cse3)) (and .cse8 .cse0 .cse9 .cse1 .cse10 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse2 .cse10 .cse18 .cse6 .cse7) (and .cse0 .cse1 .cse3 .cse11 .cse4 .cse5 .cse7) (and .cse8 .cse0 .cse1 .cse2 .cse3 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 .cse16 .cse17 .cse1 .cse10 .cse11 .cse4 .cse7) (and .cse13 .cse0 .cse9 .cse15 .cse10 (not .cse2) .cse5 .cse6 .cse7) (and .cse0 .cse16 .cse17 .cse1 .cse10 .cse12 .cse5 .cse7) (and .cse8 .cse0 .cse9 .cse17 .cse1 .cse10 .cse5 .cse7) (and .cse8 .cse0 .cse1 .cse2 .cse12 .cse5 .cse7) (and .cse0 .cse19 .cse1 (or .cse3 .cse18) .cse5 .cse7) (and .cse2 (or (and .cse8 .cse0 .cse16 .cse17 .cse10 .cse4) (and .cse8 .cse0 .cse10 .cse4 .cse6)) .cse12 .cse7) (and .cse8 .cse0 .cse19 .cse1 .cse11 .cse5 .cse7) (and .cse8 .cse0 .cse2 .cse3 .cse4 .cse6 .cse7) (and .cse0 .cse1 .cse10 .cse12 .cse4 .cse5 .cse7) (and .cse14 .cse3 .cse20 .cse5 .cse7) (and .cse1 .cse3 .cse20 .cse7) (and .cse8 .cse0 .cse1 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse1 .cse3 .cse11 .cse5 .cse6 .cse7)))) [2022-11-20 21:11:50,054 INFO L899 garLoopResultBuilder]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,054 INFO L899 garLoopResultBuilder]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,054 INFO L899 garLoopResultBuilder]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L1673(line 1673) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,056 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,057 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,058 INFO L899 garLoopResultBuilder]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,059 INFO L899 garLoopResultBuilder]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,060 INFO L899 garLoopResultBuilder]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,061 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2022-11-20 21:11:50,061 INFO L899 garLoopResultBuilder]: For program point L1554-1(lines 64 1660) no Hoare annotation was computed. [2022-11-20 21:11:50,068 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:50,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:11:50,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:11:50 BoogieIcfgContainer [2022-11-20 21:11:50,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:11:50,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:11:50,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:11:50,141 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:11:50,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:58:02" (3/4) ... [2022-11-20 21:11:50,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:11:50,191 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2022-11-20 21:11:50,200 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-20 21:11:50,202 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 21:11:50,205 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:11:50,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:11:50,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:11:50,409 INFO L158 Benchmark]: Toolchain (without parser) took 832515.56ms. Allocated memory was 138.4MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 96.3MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 375.4MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,409 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:11:50,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1276.94ms. Allocated memory is still 138.4MB. Free memory was 95.9MB in the beginning and 59.9MB in the end (delta: 36.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 173.96ms. Allocated memory is still 138.4MB. Free memory was 59.9MB in the beginning and 45.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,415 INFO L158 Benchmark]: Boogie Preprocessor took 186.53ms. Allocated memory is still 138.4MB. Free memory was 45.3MB in the beginning and 92.9MB in the end (delta: -47.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,416 INFO L158 Benchmark]: RCFGBuilder took 2834.22ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 92.4MB in the beginning and 64.7MB in the end (delta: 27.7MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,416 INFO L158 Benchmark]: TraceAbstraction took 827762.83ms. Allocated memory was 169.9MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 63.7MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2022-11-20 21:11:50,416 INFO L158 Benchmark]: Witness Printer took 267.67ms. Allocated memory is still 4.1GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 21:11:50,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1276.94ms. Allocated memory is still 138.4MB. Free memory was 95.9MB in the beginning and 59.9MB in the end (delta: 36.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 173.96ms. Allocated memory is still 138.4MB. Free memory was 59.9MB in the beginning and 45.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 186.53ms. Allocated memory is still 138.4MB. Free memory was 45.3MB in the beginning and 92.9MB in the end (delta: -47.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * RCFGBuilder took 2834.22ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 92.4MB in the beginning and 64.7MB in the end (delta: 27.7MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. * TraceAbstraction took 827762.83ms. Allocated memory was 169.9MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 63.7MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Witness Printer took 267.67ms. Allocated memory is still 4.1GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. 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 - PositiveResult [Line: 1555]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 827.6s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 27.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 113.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4370 SdHoareTripleChecker+Valid, 23.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4370 mSDsluCounter, 2386 SdHoareTripleChecker+Invalid, 19.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 283 mSDsCounter, 2767 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13045 IncrementalHoareTripleChecker+Invalid, 15812 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2767 mSolverCounterUnsat, 2103 mSDtfsCounter, 13045 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3022 GetRequests, 2529 SyntacticMatches, 423 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4229 ImplicationChecksByTransitivity, 47.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40758occurred in iteration=18, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 9301 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 1291 NumberOfFragments, 1475 HoareAnnotationTreeSize, 3 FomulaSimplifications, 15158 FormulaSimplificationTreeSizeReduction, 82.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96256 FormulaSimplificationTreeSizeReductionInter, 31.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 6788 NumberOfCodeBlocks, 6788 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 7224 ConstructedInterpolants, 0 QuantifiedInterpolants, 28598 SizeOfPredicates, 43 NumberOfNonLiveVariables, 3795 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 27 InterpolantComputations, 18 PerfectInterpolantSequences, 4518/5033 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((a5 == 1 && !(a7 == 1)) && a11 == 1) && a6 == 1) && a27 == 1) && a22 == 1) && a3 == 0) && a18 == 1) || ((((((((a26 == 1 && a5 == 1) && a12 == 1) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a27 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a6 == 1) && !(a12 == 1)) && a11 <= 0) && a22 == 1) && a18 == 1)) || (((((a7 <= 0 && a5 == 1) && a6 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((((a5 == 1 && a12 == 1) && !(a26 == 1)) && a8 == 0) && !(a27 == 1)) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a3 == 0) && a18 == 1)) || ((((((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 == 1) && a6 == 1) && !(a12 == 1)) && a27 == 1) && a18 == 1)) || (((((a5 == 1 && 1 <= a3) && !(a7 == 1)) && a22 == 1) && a18 == 1) && (a11 == 1 || a6 == 1))) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && !(a7 == 1)) && a6 == 0) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && a11 == 1) && a6 == 0) && a8 == 1) && a3 == 0) && a18 == 1)) || ((((((a5 == 1 && !(a7 == 1)) && a6 == 1) && a11 <= 0) && a27 == 1) && a22 == 1) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a11 == 1) && a6 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((((a26 == 1 && a5 == 1) && a12 == 1) && a3 <= 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a27 == 1) && a18 == 1)) || ((((((((a7 <= 0 && a5 == 1) && a12 == 1) && !(a27 == 1)) && a6 == 0) && !(a11 == 1)) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a5 == 1 && a3 <= 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && !(a12 == 1)) && a22 == 1) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && a22 == 1) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a11 == 1) && !(a12 == 1)) && a22 == 1) && a18 == 1)) || (((((a5 == 1 && ((a6 == 0 && a27 == 1) || (a27 == 0 && a6 == 1))) && !(a7 == 1)) && (a6 == 1 || a8 == 1)) && a22 == 1) && a18 == 1)) || (((a11 == 1 && ((((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a6 == 0) && a27 == 1) || ((((a26 == 1 && a5 == 1) && a6 == 0) && a27 == 1) && a3 == 0))) && !(a12 == 1)) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && ((a6 == 0 && a27 == 1) || (a27 == 0 && a6 == 1))) && !(a7 == 1)) && a11 <= 0) && a22 == 1) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && a11 == 1) && a6 == 1) && a27 == 1) && a3 == 0) && a18 == 1)) || ((((((a5 == 1 && !(a7 == 1)) && a6 == 0) && !(a12 == 1)) && a27 == 1) && a22 == 1) && a18 == 1)) || ((((a8 == 0 && a6 == 1) && (((((a26 == 1 && a5 == 1) && a11 <= 0) && a27 == 1) && a3 == 0) || (((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 <= 0) && a27 == 1))) && a22 == 1) && a18 == 1)) || (((!(a7 == 1) && a6 == 1) && (((((a26 == 1 && a5 == 1) && a11 <= 0) && a27 == 1) && a3 == 0) || (((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 <= 0) && a27 == 1))) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a27 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a6 == 1) && a11 <= 0) && a22 == 1) && a3 == 0) && a18 == 1) - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((a5 == 1 && !(a7 == 1)) && a11 == 1) && a6 == 1) && a27 == 1) && a22 == 1) && a3 == 0) && a18 == 1) || ((((((((a26 == 1 && a5 == 1) && a12 == 1) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a27 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a6 == 1) && !(a12 == 1)) && a11 <= 0) && a22 == 1) && a18 == 1)) || (((((a7 <= 0 && a5 == 1) && a6 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((((a5 == 1 && a12 == 1) && !(a26 == 1)) && a8 == 0) && !(a27 == 1)) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a3 == 0) && a18 == 1)) || ((((((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 == 1) && a6 == 1) && !(a12 == 1)) && a27 == 1) && a18 == 1)) || (((((a5 == 1 && 1 <= a3) && !(a7 == 1)) && a22 == 1) && a18 == 1) && (a11 == 1 || a6 == 1))) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && !(a7 == 1)) && a6 == 0) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && a11 == 1) && a6 == 0) && a8 == 1) && a3 == 0) && a18 == 1)) || ((((((a5 == 1 && !(a7 == 1)) && a6 == 1) && a11 <= 0) && a27 == 1) && a22 == 1) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a11 == 1) && a6 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((((a26 == 1 && a5 == 1) && a12 == 1) && a3 <= 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && a11 <= 0) && a27 == 1) && a18 == 1)) || ((((((((a7 <= 0 && a5 == 1) && a12 == 1) && !(a27 == 1)) && a6 == 0) && !(a11 == 1)) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a5 == 1 && a3 <= 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && !(a12 == 1)) && a22 == 1) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && a12 == 1) && 1 <= a3) && !(a7 == 1)) && a6 == 0) && a22 == 1) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a11 == 1) && !(a12 == 1)) && a22 == 1) && a18 == 1)) || (((((a5 == 1 && ((a6 == 0 && a27 == 1) || (a27 == 0 && a6 == 1))) && !(a7 == 1)) && (a6 == 1 || a8 == 1)) && a22 == 1) && a18 == 1)) || (((a11 == 1 && ((((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a6 == 0) && a27 == 1) || ((((a26 == 1 && a5 == 1) && a6 == 0) && a27 == 1) && a3 == 0))) && !(a12 == 1)) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && ((a6 == 0 && a27 == 1) || (a27 == 0 && a6 == 1))) && !(a7 == 1)) && a11 <= 0) && a22 == 1) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && a11 == 1) && a6 == 1) && a27 == 1) && a3 == 0) && a18 == 1)) || ((((((a5 == 1 && !(a7 == 1)) && a6 == 0) && !(a12 == 1)) && a27 == 1) && a22 == 1) && a18 == 1)) || ((((a8 == 0 && a6 == 1) && (((((a26 == 1 && a5 == 1) && a11 <= 0) && a27 == 1) && a3 == 0) || (((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 <= 0) && a27 == 1))) && a22 == 1) && a18 == 1)) || (((!(a7 == 1) && a6 == 1) && (((((a26 == 1 && a5 == 1) && a11 <= 0) && a27 == 1) && a3 == 0) || (((((a26 == 1 && a5 == 1) && a3 <= 1) && 1 <= a3) && a11 <= 0) && a27 == 1))) && a18 == 1)) || ((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a27 == 1) && a22 == 1) && a3 == 0) && a18 == 1)) || (((((((a26 == 1 && a5 == 1) && !(a7 == 1)) && a6 == 1) && a11 <= 0) && a22 == 1) && a3 == 0) && a18 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 21:11:50,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_742930cb-4599-4c2e-addf-a18ed9112e92/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE