./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI --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 ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 --- 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-5e519f3 [2022-11-03 03:50:19,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:50:19,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:50:19,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:50:19,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:50:19,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:50:19,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:50:19,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:50:19,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:50:19,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:50:20,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:50:20,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:50:20,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:50:20,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:50:20,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:50:20,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:50:20,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:50:20,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:50:20,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:50:20,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:50:20,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:50:20,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:50:20,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:50:20,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:50:20,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:50:20,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:50:20,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:50:20,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:50:20,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:50:20,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:50:20,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:50:20,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:50:20,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:50:20,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:50:20,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:50:20,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:50:20,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:50:20,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:50:20,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:50:20,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:50:20,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:50:20,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:50:20,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:50:20,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:50:20,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:50:20,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:50:20,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:50:20,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:50:20,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:50:20,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:50:20,089 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:50:20,089 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:50:20,090 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:50:20,090 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:50:20,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:50:20,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:50:20,091 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:50:20,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:50:20,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:50:20,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:50:20,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:50:20,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:50:20,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:50:20,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:50:20,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:50:20,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:50:20,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:50:20,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:50:20,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:50:20,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:50:20,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:50:20,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:50:20,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:50:20,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:50:20,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:20,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:50:20,098 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:50:20,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:50:20,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:50:20,099 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:50:20,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:50:20,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:50:20,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:50:20,100 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_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 [2022-11-03 03:50:20,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:50:20,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:50:20,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:50:20,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:50:20,429 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:50:20,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c [2022-11-03 03:50:20,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/data/2d549e18e/d18b42c4dd00496da933ac860c8d140a/FLAG1159c316d [2022-11-03 03:50:21,302 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:50:21,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c [2022-11-03 03:50:21,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/data/2d549e18e/d18b42c4dd00496da933ac860c8d140a/FLAG1159c316d [2022-11-03 03:50:21,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/data/2d549e18e/d18b42c4dd00496da933ac860c8d140a [2022-11-03 03:50:21,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:50:21,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:50:21,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:21,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:50:21,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:50:21,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:21" (1/1) ... [2022-11-03 03:50:21,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0f0996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:21, skipping insertion in model container [2022-11-03 03:50:21,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:21" (1/1) ... [2022-11-03 03:50:21,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:50:22,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:50:22,870 WARN L230 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_9a0a394e-dffd-4204-8c13-ac859bc06ece/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2022-11-03 03:50:23,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:23,721 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:50:23,840 WARN L230 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_9a0a394e-dffd-4204-8c13-ac859bc06ece/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2022-11-03 03:50:24,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:24,276 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:50:24,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24 WrapperNode [2022-11-03 03:50:24,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:24,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:24,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:50:24,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:50:24,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,495 INFO L138 Inliner]: procedures = 120, calls = 2195, calls flagged for inlining = 23, calls inlined = 19, statements flattened = 2336 [2022-11-03 03:50:24,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:24,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:50:24,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:50:24,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:50:24,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:50:24,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:50:24,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:50:24,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:50:24,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2022-11-03 03:50:24,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:24,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:24,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:50:24,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:50:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:50:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:50:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:50:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:50:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-03 03:50:24,874 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-03 03:50:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:50:24,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:50:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure MmLockPagableDataSection [2022-11-03 03:50:24,874 INFO L138 BoogieDeclarations]: Found implementation of procedure MmLockPagableDataSection [2022-11-03 03:50:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:50:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-11-03 03:50:24,875 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-11-03 03:50:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure IoOpenDeviceRegistryKey [2022-11-03 03:50:24,875 INFO L138 BoogieDeclarations]: Found implementation of procedure IoOpenDeviceRegistryKey [2022-11-03 03:50:24,875 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-03 03:50:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-03 03:50:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:50:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:50:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_malloc [2022-11-03 03:50:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_malloc [2022-11-03 03:50:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-03 03:50:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-03 03:50:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:50:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-11-03 03:50:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-11-03 03:50:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-11-03 03:50:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-11-03 03:50:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:50:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:50:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:50:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-03 03:50:24,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-03 03:50:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 03:50:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:50:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-11-03 03:50:24,879 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-11-03 03:50:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-11-03 03:50:24,879 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-11-03 03:50:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:50:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-03 03:50:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-03 03:50:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-11-03 03:50:24,880 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-11-03 03:50:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:50:24,880 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-11-03 03:50:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-11-03 03:50:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:50:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-11-03 03:50:24,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-11-03 03:50:24,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:50:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:50:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-11-03 03:50:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-11-03 03:50:25,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:50:25,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:50:25,629 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:25,649 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-03 03:50:25,649 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-03 03:50:26,653 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,695 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-03 03:50:26,695 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-03 03:50:26,722 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,723 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,725 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,736 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,749 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:26,760 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:41,794 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##276: assume false; [2022-11-03 03:50:41,794 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##277: assume !false; [2022-11-03 03:50:41,794 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##504: assume !false; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##503: assume false; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: CdAudioPnp_#res#1 := 0; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##172: assume !false; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume false; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##65: assume !false; [2022-11-03 03:50:41,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##64: assume false; [2022-11-03 03:50:41,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !false; [2022-11-03 03:50:41,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume false; [2022-11-03 03:50:41,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2022-11-03 03:50:41,796 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2022-11-03 03:50:41,838 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 03:50:41,845 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-03 03:50:41,846 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-03 03:50:41,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:50:42,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:50:42,637 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 03:50:42,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:42 BoogieIcfgContainer [2022-11-03 03:50:42,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:50:42,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:50:42,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:50:42,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:50:42,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:21" (1/3) ... [2022-11-03 03:50:42,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd3027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:42, skipping insertion in model container [2022-11-03 03:50:42,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (2/3) ... [2022-11-03 03:50:42,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd3027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:42, skipping insertion in model container [2022-11-03 03:50:42,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:42" (3/3) ... [2022-11-03 03:50:42,654 INFO L112 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2022-11-03 03:50:42,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:50:42,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:50:42,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:50:42,781 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;@453136d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:50:42,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:50:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 354 states have (on average 1.536723163841808) internal successors, (544), 373 states have internal predecessors, (544), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-03 03:50:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:50:42,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:42,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:42,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2107210722, now seen corresponding path program 1 times [2022-11-03 03:50:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888740984] [2022-11-03 03:50:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:43,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888740984] [2022-11-03 03:50:43,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888740984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:43,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:43,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048935946] [2022-11-03 03:50:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:43,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:43,428 INFO L87 Difference]: Start difference. First operand has 488 states, 354 states have (on average 1.536723163841808) internal successors, (544), 373 states have internal predecessors, (544), 113 states have call successors, (113), 19 states have call predecessors, (113), 19 states have return successors, (113), 108 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:44,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:46,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:50,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:52,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:55,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:57,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:59,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:50:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:50:59,166 INFO L93 Difference]: Finished difference Result 1046 states and 1666 transitions. [2022-11-03 03:50:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:50:59,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:50:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:50:59,182 INFO L225 Difference]: With dead ends: 1046 [2022-11-03 03:50:59,182 INFO L226 Difference]: Without dead ends: 672 [2022-11-03 03:50:59,188 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 [2022-11-03 03:50:59,191 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 609 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:50:59,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1219 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 180 Invalid, 4 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:50:59,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-03 03:50:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 668. [2022-11-03 03:50:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 494 states have (on average 1.4959514170040487) internal successors, (739), 507 states have internal predecessors, (739), 143 states have call successors, (143), 33 states have call predecessors, (143), 30 states have return successors, (136), 129 states have call predecessors, (136), 131 states have call successors, (136) [2022-11-03 03:50:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1018 transitions. [2022-11-03 03:50:59,299 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1018 transitions. Word has length 12 [2022-11-03 03:50:59,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:50:59,300 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1018 transitions. [2022-11-03 03:50:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:50:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1018 transitions. [2022-11-03 03:50:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:50:59,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:59,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:50:59,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:50:59,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1251723392, now seen corresponding path program 1 times [2022-11-03 03:50:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:59,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282635477] [2022-11-03 03:50:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:50:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:50:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:50:59,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:50:59,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282635477] [2022-11-03 03:50:59,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282635477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:50:59,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:50:59,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:50:59,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451333705] [2022-11-03 03:50:59,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:50:59,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:50:59,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:50:59,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:50:59,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:50:59,412 INFO L87 Difference]: Start difference. First operand 668 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:01,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:03,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:06,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:08,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:10,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:12,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:14,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:18,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:18,379 INFO L93 Difference]: Finished difference Result 687 states and 1043 transitions. [2022-11-03 03:51:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:51:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:18,407 INFO L225 Difference]: With dead ends: 687 [2022-11-03 03:51:18,407 INFO L226 Difference]: Without dead ends: 668 [2022-11-03 03:51:18,408 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 [2022-11-03 03:51:18,409 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 9 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:18,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1274 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2022-11-03 03:51:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-03 03:51:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2022-11-03 03:51:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 494 states have (on average 1.4939271255060729) internal successors, (738), 507 states have internal predecessors, (738), 143 states have call successors, (143), 33 states have call predecessors, (143), 30 states have return successors, (136), 129 states have call predecessors, (136), 131 states have call successors, (136) [2022-11-03 03:51:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1017 transitions. [2022-11-03 03:51:18,497 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1017 transitions. Word has length 14 [2022-11-03 03:51:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:18,498 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1017 transitions. [2022-11-03 03:51:18,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1017 transitions. [2022-11-03 03:51:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:51:18,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:18,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:51:18,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash -975879627, now seen corresponding path program 1 times [2022-11-03 03:51:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:18,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026665149] [2022-11-03 03:51:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:18,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:18,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026665149] [2022-11-03 03:51:18,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026665149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:18,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:18,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4459893] [2022-11-03 03:51:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:18,599 INFO L87 Difference]: Start difference. First operand 668 states and 1017 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:19,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:22,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:26,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:29,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:31,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:33,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:35,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:36,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:39,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:41,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:41,333 INFO L93 Difference]: Finished difference Result 1449 states and 2247 transitions. [2022-11-03 03:51:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:41,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:51:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:41,341 INFO L225 Difference]: With dead ends: 1449 [2022-11-03 03:51:41,341 INFO L226 Difference]: Without dead ends: 1108 [2022-11-03 03:51:41,343 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 [2022-11-03 03:51:41,344 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 439 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:41,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1655 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 8 Unknown, 0 Unchecked, 22.7s Time] [2022-11-03 03:51:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-03 03:51:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 806. [2022-11-03 03:51:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 587 states have (on average 1.4701873935264054) internal successors, (863), 600 states have internal predecessors, (863), 173 states have call successors, (173), 49 states have call predecessors, (173), 45 states have return successors, (205), 158 states have call predecessors, (205), 161 states have call successors, (205) [2022-11-03 03:51:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1241 transitions. [2022-11-03 03:51:41,399 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1241 transitions. Word has length 18 [2022-11-03 03:51:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:41,400 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1241 transitions. [2022-11-03 03:51:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1241 transitions. [2022-11-03 03:51:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:51:41,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:41,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:41,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:51:41,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 741478645, now seen corresponding path program 1 times [2022-11-03 03:51:41,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778483860] [2022-11-03 03:51:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:41,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:41,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778483860] [2022-11-03 03:51:41,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778483860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:41,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:41,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:51:41,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194197609] [2022-11-03 03:51:41,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:41,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:41,588 INFO L87 Difference]: Start difference. First operand 806 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:43,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:46,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:48,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:50,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:52,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:54,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:54,955 INFO L93 Difference]: Finished difference Result 1304 states and 1978 transitions. [2022-11-03 03:51:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 03:51:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:54,987 INFO L225 Difference]: With dead ends: 1304 [2022-11-03 03:51:54,988 INFO L226 Difference]: Without dead ends: 831 [2022-11-03 03:51:54,989 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 [2022-11-03 03:51:54,990 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 707 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:54,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 689 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 03:51:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-03 03:51:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 805. [2022-11-03 03:51:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 586 states have (on average 1.4658703071672354) internal successors, (859), 598 states have internal predecessors, (859), 172 states have call successors, (172), 50 states have call predecessors, (172), 46 states have return successors, (205), 158 states have call predecessors, (205), 161 states have call successors, (205) [2022-11-03 03:51:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1236 transitions. [2022-11-03 03:51:55,041 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1236 transitions. Word has length 19 [2022-11-03 03:51:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:55,041 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1236 transitions. [2022-11-03 03:51:55,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1236 transitions. [2022-11-03 03:51:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:51:55,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:55,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:51:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:51:55,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1352958913, now seen corresponding path program 1 times [2022-11-03 03:51:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:55,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141177592] [2022-11-03 03:51:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:51:55,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:55,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141177592] [2022-11-03 03:51:55,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141177592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:55,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:55,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:51:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526446784] [2022-11-03 03:51:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:55,149 INFO L87 Difference]: Start difference. First operand 805 states and 1236 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:51:56,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:59,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:01,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:04,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:06,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:07,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:10,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:12,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:12,279 INFO L93 Difference]: Finished difference Result 1323 states and 1998 transitions. [2022-11-03 03:52:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:12,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 03:52:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:12,319 INFO L225 Difference]: With dead ends: 1323 [2022-11-03 03:52:12,319 INFO L226 Difference]: Without dead ends: 1239 [2022-11-03 03:52:12,320 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 [2022-11-03 03:52:12,321 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 685 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:12,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1175 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 6 Unknown, 0 Unchecked, 17.1s Time] [2022-11-03 03:52:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-03 03:52:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1197. [2022-11-03 03:52:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 885 states have (on average 1.4757062146892654) internal successors, (1306), 896 states have internal predecessors, (1306), 236 states have call successors, (236), 78 states have call predecessors, (236), 75 states have return successors, (290), 224 states have call predecessors, (290), 225 states have call successors, (290) [2022-11-03 03:52:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1832 transitions. [2022-11-03 03:52:12,389 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1832 transitions. Word has length 19 [2022-11-03 03:52:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:12,390 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1832 transitions. [2022-11-03 03:52:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:12,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1832 transitions. [2022-11-03 03:52:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:52:12,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:12,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:52:12,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -903285917, now seen corresponding path program 1 times [2022-11-03 03:52:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:12,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198030733] [2022-11-03 03:52:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:12,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:12,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198030733] [2022-11-03 03:52:12,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198030733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:12,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:12,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:12,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594468785] [2022-11-03 03:52:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:12,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:12,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:12,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:12,488 INFO L87 Difference]: Start difference. First operand 1197 states and 1832 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:14,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:16,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:19,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:21,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:23,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:26,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:28,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:29,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:31,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:33,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:33,744 INFO L93 Difference]: Finished difference Result 1211 states and 1850 transitions. [2022-11-03 03:52:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:52:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:33,778 INFO L225 Difference]: With dead ends: 1211 [2022-11-03 03:52:33,778 INFO L226 Difference]: Without dead ends: 1207 [2022-11-03 03:52:33,779 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 [2022-11-03 03:52:33,780 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 34 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:33,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1235 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 21.2s Time] [2022-11-03 03:52:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-03 03:52:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2022-11-03 03:52:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 893 states have (on average 1.4759238521836506) internal successors, (1318), 902 states have internal predecessors, (1318), 236 states have call successors, (236), 78 states have call predecessors, (236), 75 states have return successors, (290), 224 states have call predecessors, (290), 225 states have call successors, (290) [2022-11-03 03:52:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1844 transitions. [2022-11-03 03:52:33,863 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1844 transitions. Word has length 18 [2022-11-03 03:52:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1844 transitions. [2022-11-03 03:52:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1844 transitions. [2022-11-03 03:52:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:52:33,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:33,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:33,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:52:33,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash -426553731, now seen corresponding path program 1 times [2022-11-03 03:52:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:33,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155771091] [2022-11-03 03:52:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:34,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155771091] [2022-11-03 03:52:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155771091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:34,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:34,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:52:34,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354041255] [2022-11-03 03:52:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:34,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:52:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:34,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:52:34,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:52:34,083 INFO L87 Difference]: Start difference. First operand 1205 states and 1844 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:35,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:37,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:39,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:42,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:45,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:47,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:48,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:51,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:53,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:55,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:55,480 INFO L93 Difference]: Finished difference Result 2179 states and 3337 transitions. [2022-11-03 03:52:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 03:52:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:55,488 INFO L225 Difference]: With dead ends: 2179 [2022-11-03 03:52:55,488 INFO L226 Difference]: Without dead ends: 1494 [2022-11-03 03:52:55,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:55,492 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1062 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 328 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1101 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 314 Invalid, 6 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 03:52:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-03 03:52:55,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1193. [2022-11-03 03:52:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 883 states have (on average 1.4722536806342015) internal successors, (1300), 892 states have internal predecessors, (1300), 234 states have call successors, (234), 76 states have call predecessors, (234), 75 states have return successors, (286), 224 states have call predecessors, (286), 223 states have call successors, (286) [2022-11-03 03:52:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1820 transitions. [2022-11-03 03:52:55,567 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1820 transitions. Word has length 19 [2022-11-03 03:52:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:55,567 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1820 transitions. [2022-11-03 03:52:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:52:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1820 transitions. [2022-11-03 03:52:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 03:52:55,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:55,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:52:55,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:55,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1971571661, now seen corresponding path program 1 times [2022-11-03 03:52:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:55,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416066440] [2022-11-03 03:52:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:55,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:52:55,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:55,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416066440] [2022-11-03 03:52:55,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416066440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:55,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:55,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533281053] [2022-11-03 03:52:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:55,724 INFO L87 Difference]: Start difference. First operand 1193 states and 1820 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:52:57,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:59,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:02,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:04,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:06,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:08,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:10,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:12,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:14,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:16,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:16,929 INFO L93 Difference]: Finished difference Result 2387 states and 3643 transitions. [2022-11-03 03:53:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:16,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-03 03:53:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:16,961 INFO L225 Difference]: With dead ends: 2387 [2022-11-03 03:53:16,961 INFO L226 Difference]: Without dead ends: 1196 [2022-11-03 03:53:16,965 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 [2022-11-03 03:53:16,966 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 0 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:16,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1288 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 8 Unknown, 0 Unchecked, 21.1s Time] [2022-11-03 03:53:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-11-03 03:53:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2022-11-03 03:53:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 886 states have (on average 1.4706546275395034) internal successors, (1303), 895 states have internal predecessors, (1303), 234 states have call successors, (234), 76 states have call predecessors, (234), 75 states have return successors, (286), 224 states have call predecessors, (286), 223 states have call successors, (286) [2022-11-03 03:53:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1823 transitions. [2022-11-03 03:53:17,040 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1823 transitions. Word has length 21 [2022-11-03 03:53:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:17,040 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1823 transitions. [2022-11-03 03:53:17,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1823 transitions. [2022-11-03 03:53:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 03:53:17,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:17,043 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] [2022-11-03 03:53:17,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:53:17,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:17,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 400931274, now seen corresponding path program 1 times [2022-11-03 03:53:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:17,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61802132] [2022-11-03 03:53:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:53:17,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:17,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61802132] [2022-11-03 03:53:17,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61802132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:17,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341579517] [2022-11-03 03:53:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:17,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:17,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:17,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:17,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:53:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:17,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:53:17,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:53:18,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:18,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341579517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:18,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 03:53:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355591640] [2022-11-03 03:53:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:18,009 INFO L87 Difference]: Start difference. First operand 1196 states and 1823 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:19,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:21,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:24,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:26,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:28,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:31,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:33,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:33,111 INFO L93 Difference]: Finished difference Result 1713 states and 2565 transitions. [2022-11-03 03:53:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-03 03:53:33,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:33,148 INFO L225 Difference]: With dead ends: 1713 [2022-11-03 03:53:33,149 INFO L226 Difference]: Without dead ends: 1636 [2022-11-03 03:53:33,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:33,151 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 651 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:33,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 968 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2022-11-03 03:53:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-11-03 03:53:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 984. [2022-11-03 03:53:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 721 states have (on average 1.4244105409153953) internal successors, (1027), 727 states have internal predecessors, (1027), 185 states have call successors, (185), 73 states have call predecessors, (185), 77 states have return successors, (245), 183 states have call predecessors, (245), 178 states have call successors, (245) [2022-11-03 03:53:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1457 transitions. [2022-11-03 03:53:33,251 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1457 transitions. Word has length 24 [2022-11-03 03:53:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:33,252 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1457 transitions. [2022-11-03 03:53:33,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:53:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1457 transitions. [2022-11-03 03:53:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:53:33,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:33,254 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] [2022-11-03 03:53:33,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:33,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -942460430, now seen corresponding path program 1 times [2022-11-03 03:53:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137339100] [2022-11-03 03:53:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:53:33,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:33,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137339100] [2022-11-03 03:53:33,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137339100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:33,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:33,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615575923] [2022-11-03 03:53:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:33,677 INFO L87 Difference]: Start difference. First operand 984 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:36,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:37,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:40,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:42,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:45,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:48,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:50,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:52,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:52,265 INFO L93 Difference]: Finished difference Result 1083 states and 1585 transitions. [2022-11-03 03:53:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-03 03:53:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:52,304 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 03:53:52,304 INFO L226 Difference]: Without dead ends: 1044 [2022-11-03 03:53:52,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:52,305 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 729 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:52,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1062 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 410 Invalid, 6 Unknown, 0 Unchecked, 18.5s Time] [2022-11-03 03:53:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-11-03 03:53:52,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 984. [2022-11-03 03:53:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 721 states have (on average 1.4216366158113731) internal successors, (1025), 727 states have internal predecessors, (1025), 185 states have call successors, (185), 73 states have call predecessors, (185), 77 states have return successors, (245), 183 states have call predecessors, (245), 178 states have call successors, (245) [2022-11-03 03:53:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1455 transitions. [2022-11-03 03:53:52,378 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1455 transitions. Word has length 28 [2022-11-03 03:53:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:52,378 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1455 transitions. [2022-11-03 03:53:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1455 transitions. [2022-11-03 03:53:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 03:53:52,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:52,381 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] [2022-11-03 03:53:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:53:52,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 372923120, now seen corresponding path program 1 times [2022-11-03 03:53:52,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:52,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528367550] [2022-11-03 03:53:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:52,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:53:52,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:52,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528367550] [2022-11-03 03:53:52,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528367550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:52,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:52,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464608525] [2022-11-03 03:53:52,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:52,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:52,544 INFO L87 Difference]: Start difference. First operand 984 states and 1455 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:55,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:56,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:58,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:01,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:03,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:05,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:07,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:09,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:11,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:11,715 INFO L93 Difference]: Finished difference Result 1054 states and 1544 transitions. [2022-11-03 03:54:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:54:11,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-03 03:54:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:11,752 INFO L225 Difference]: With dead ends: 1054 [2022-11-03 03:54:11,752 INFO L226 Difference]: Without dead ends: 1015 [2022-11-03 03:54:11,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:11,753 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 690 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:11,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1058 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 6 Unknown, 0 Unchecked, 19.1s Time] [2022-11-03 03:54:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-11-03 03:54:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 984. [2022-11-03 03:54:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 721 states have (on average 1.418862690707351) internal successors, (1023), 727 states have internal predecessors, (1023), 185 states have call successors, (185), 73 states have call predecessors, (185), 77 states have return successors, (245), 183 states have call predecessors, (245), 178 states have call successors, (245) [2022-11-03 03:54:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1453 transitions. [2022-11-03 03:54:11,831 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1453 transitions. Word has length 29 [2022-11-03 03:54:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:11,831 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1453 transitions. [2022-11-03 03:54:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1453 transitions. [2022-11-03 03:54:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:54:11,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:11,833 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] [2022-11-03 03:54:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:54:11,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2054923603, now seen corresponding path program 1 times [2022-11-03 03:54:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:11,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12935581] [2022-11-03 03:54:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:54:12,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12935581] [2022-11-03 03:54:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12935581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:12,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:12,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578804790] [2022-11-03 03:54:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:12,060 INFO L87 Difference]: Start difference. First operand 984 states and 1453 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:15,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:18,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:20,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:22,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:25,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:27,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:29,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:31,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:33,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:35,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:35,273 INFO L93 Difference]: Finished difference Result 1335 states and 1962 transitions. [2022-11-03 03:54:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 03:54:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:35,278 INFO L225 Difference]: With dead ends: 1335 [2022-11-03 03:54:35,279 INFO L226 Difference]: Without dead ends: 1326 [2022-11-03 03:54:35,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:35,280 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 912 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 111 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:35,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1277 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 410 Invalid, 8 Unknown, 0 Unchecked, 23.1s Time] [2022-11-03 03:54:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-11-03 03:54:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1020. [2022-11-03 03:54:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 755 states have (on average 1.4105960264900663) internal successors, (1065), 760 states have internal predecessors, (1065), 185 states have call successors, (185), 73 states have call predecessors, (185), 79 states have return successors, (248), 186 states have call predecessors, (248), 178 states have call successors, (248) [2022-11-03 03:54:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1498 transitions. [2022-11-03 03:54:35,376 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1498 transitions. Word has length 30 [2022-11-03 03:54:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:35,376 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1498 transitions. [2022-11-03 03:54:35,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1498 transitions. [2022-11-03 03:54:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:54:35,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:35,379 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] [2022-11-03 03:54:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:54:35,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2055200433, now seen corresponding path program 1 times [2022-11-03 03:54:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:35,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328881906] [2022-11-03 03:54:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:54:35,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328881906] [2022-11-03 03:54:35,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328881906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:35,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:35,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:35,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639756416] [2022-11-03 03:54:35,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:35,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:35,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:35,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:35,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:35,478 INFO L87 Difference]: Start difference. First operand 1020 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:37,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:39,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:42,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:44,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:46,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:48,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:50,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:52,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:52,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:52,600 INFO L93 Difference]: Finished difference Result 1062 states and 1555 transitions. [2022-11-03 03:54:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 03:54:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:52,638 INFO L225 Difference]: With dead ends: 1062 [2022-11-03 03:54:52,638 INFO L226 Difference]: Without dead ends: 1030 [2022-11-03 03:54:52,639 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 [2022-11-03 03:54:52,639 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 677 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:52,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 656 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 7 Unknown, 0 Unchecked, 17.0s Time] [2022-11-03 03:54:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-03 03:54:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1023. [2022-11-03 03:54:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 758 states have (on average 1.4063324538258575) internal successors, (1066), 763 states have internal predecessors, (1066), 185 states have call successors, (185), 73 states have call predecessors, (185), 79 states have return successors, (248), 186 states have call predecessors, (248), 178 states have call successors, (248) [2022-11-03 03:54:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1499 transitions. [2022-11-03 03:54:52,733 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1499 transitions. Word has length 30 [2022-11-03 03:54:52,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:52,733 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1499 transitions. [2022-11-03 03:54:52,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1499 transitions. [2022-11-03 03:54:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 03:54:52,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:52,735 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] [2022-11-03 03:54:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:54:52,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2069545342, now seen corresponding path program 1 times [2022-11-03 03:54:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571800184] [2022-11-03 03:54:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:54:52,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571800184] [2022-11-03 03:54:52,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571800184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:52,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:52,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:54:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014759126] [2022-11-03 03:54:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:54:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:54:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:52,870 INFO L87 Difference]: Start difference. First operand 1023 states and 1499 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:55,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:58,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:00,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:02,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:04,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:06,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:08,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:10,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:12,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:14,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:14,914 INFO L93 Difference]: Finished difference Result 1327 states and 1948 transitions. [2022-11-03 03:55:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-03 03:55:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:14,922 INFO L225 Difference]: With dead ends: 1327 [2022-11-03 03:55:14,922 INFO L226 Difference]: Without dead ends: 1318 [2022-11-03 03:55:14,923 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 [2022-11-03 03:55:14,923 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 293 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:14,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1443 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 9 Unknown, 0 Unchecked, 21.9s Time] [2022-11-03 03:55:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-03 03:55:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1021. [2022-11-03 03:55:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 756 states have (on average 1.4047619047619047) internal successors, (1062), 761 states have internal predecessors, (1062), 185 states have call successors, (185), 73 states have call predecessors, (185), 79 states have return successors, (248), 186 states have call predecessors, (248), 178 states have call successors, (248) [2022-11-03 03:55:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1495 transitions. [2022-11-03 03:55:15,040 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1495 transitions. Word has length 30 [2022-11-03 03:55:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:15,041 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1495 transitions. [2022-11-03 03:55:15,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1495 transitions. [2022-11-03 03:55:15,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 03:55:15,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:15,043 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] [2022-11-03 03:55:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:55:15,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 721772729, now seen corresponding path program 1 times [2022-11-03 03:55:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:15,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128018227] [2022-11-03 03:55:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:55:15,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:15,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128018227] [2022-11-03 03:55:15,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128018227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:55:15,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619666278] [2022-11-03 03:55:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:15,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:15,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:55:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:15,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:55:15,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:55:15,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619666278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:15,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:55:15,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2022-11-03 03:55:15,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565534428] [2022-11-03 03:55:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:15,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:15,800 INFO L87 Difference]: Start difference. First operand 1021 states and 1495 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:19,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:22,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:24,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:26,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:28,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:30,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:32,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:34,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:36,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:36,630 INFO L93 Difference]: Finished difference Result 1033 states and 1506 transitions. [2022-11-03 03:55:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:36,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-03 03:55:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:36,675 INFO L225 Difference]: With dead ends: 1033 [2022-11-03 03:55:36,675 INFO L226 Difference]: Without dead ends: 1012 [2022-11-03 03:55:36,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:36,677 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 9 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:36,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1864 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 03:55:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-03 03:55:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2022-11-03 03:55:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 747 states have (on average 1.4082998661311914) internal successors, (1052), 752 states have internal predecessors, (1052), 185 states have call successors, (185), 73 states have call predecessors, (185), 79 states have return successors, (248), 186 states have call predecessors, (248), 178 states have call successors, (248) [2022-11-03 03:55:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1485 transitions. [2022-11-03 03:55:36,774 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1485 transitions. Word has length 31 [2022-11-03 03:55:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:36,774 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1485 transitions. [2022-11-03 03:55:36,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:55:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1485 transitions. [2022-11-03 03:55:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:55:36,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:36,777 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] [2022-11-03 03:55:36,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 03:55:37,003 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1823883511, now seen corresponding path program 1 times [2022-11-03 03:55:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:37,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612884319] [2022-11-03 03:55:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:55:37,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:37,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612884319] [2022-11-03 03:55:37,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612884319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:37,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:37,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:55:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925163543] [2022-11-03 03:55:37,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:37,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:55:37,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:55:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:55:37,170 INFO L87 Difference]: Start difference. First operand 1012 states and 1485 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:55:39,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:41,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:43,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:46,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:48,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:50,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:52,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:54,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:55:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:54,883 INFO L93 Difference]: Finished difference Result 1622 states and 2362 transitions. [2022-11-03 03:55:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:55:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-11-03 03:55:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:54,912 INFO L225 Difference]: With dead ends: 1622 [2022-11-03 03:55:54,912 INFO L226 Difference]: Without dead ends: 1032 [2022-11-03 03:55:54,914 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 [2022-11-03 03:55:54,914 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 302 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:54,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1046 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 17.6s Time] [2022-11-03 03:55:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-11-03 03:55:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1008. [2022-11-03 03:55:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 744 states have (on average 1.4045698924731183) internal successors, (1045), 748 states have internal predecessors, (1045), 185 states have call successors, (185), 73 states have call predecessors, (185), 78 states have return successors, (243), 186 states have call predecessors, (243), 178 states have call successors, (243) [2022-11-03 03:55:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1473 transitions. [2022-11-03 03:55:55,027 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1473 transitions. Word has length 39 [2022-11-03 03:55:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:55,027 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1473 transitions. [2022-11-03 03:55:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:55:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1473 transitions. [2022-11-03 03:55:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:55:55,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:55,030 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] [2022-11-03 03:55:55,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:55:55,031 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash -365549687, now seen corresponding path program 1 times [2022-11-03 03:55:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:55:55,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430893060] [2022-11-03 03:55:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:55:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:55:55,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:55:55,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430893060] [2022-11-03 03:55:55,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430893060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:55,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:55,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837933376] [2022-11-03 03:55:55,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:55:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:55,197 INFO L87 Difference]: Start difference. First operand 1008 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:55:58,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:00,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:02,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:04,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:07,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:09,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:11,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:13,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:15,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:17,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:17,650 INFO L93 Difference]: Finished difference Result 1315 states and 1931 transitions. [2022-11-03 03:56:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:56:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-11-03 03:56:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:17,654 INFO L225 Difference]: With dead ends: 1315 [2022-11-03 03:56:17,654 INFO L226 Difference]: Without dead ends: 897 [2022-11-03 03:56:17,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:56:17,656 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 720 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:17,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1144 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 8 Unknown, 0 Unchecked, 22.3s Time] [2022-11-03 03:56:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-03 03:56:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 856. [2022-11-03 03:56:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 637 states have (on average 1.4113029827315542) internal successors, (899), 642 states have internal predecessors, (899), 162 states have call successors, (162), 55 states have call predecessors, (162), 56 states have return successors, (200), 158 states have call predecessors, (200), 155 states have call successors, (200) [2022-11-03 03:56:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1261 transitions. [2022-11-03 03:56:17,738 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1261 transitions. Word has length 40 [2022-11-03 03:56:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:17,739 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1261 transitions. [2022-11-03 03:56:17,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:56:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1261 transitions. [2022-11-03 03:56:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 03:56:17,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:17,742 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] [2022-11-03 03:56:17,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 03:56:17,742 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash 930520316, now seen corresponding path program 1 times [2022-11-03 03:56:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:17,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157072741] [2022-11-03 03:56:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:56:17,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:17,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157072741] [2022-11-03 03:56:17,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157072741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:17,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:17,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:56:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953514029] [2022-11-03 03:56:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:56:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:56:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:56:17,861 INFO L87 Difference]: Start difference. First operand 856 states and 1261 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:21,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:23,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:25,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:27,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:29,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:31,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:33,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:33,544 INFO L93 Difference]: Finished difference Result 876 states and 1283 transitions. [2022-11-03 03:56:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:56:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-11-03 03:56:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:33,577 INFO L225 Difference]: With dead ends: 876 [2022-11-03 03:56:33,577 INFO L226 Difference]: Without dead ends: 869 [2022-11-03 03:56:33,578 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 [2022-11-03 03:56:33,578 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 32 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:33,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1182 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 6 Unknown, 0 Unchecked, 15.6s Time] [2022-11-03 03:56:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-03 03:56:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 867. [2022-11-03 03:56:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 648 states have (on average 1.404320987654321) internal successors, (910), 653 states have internal predecessors, (910), 162 states have call successors, (162), 55 states have call predecessors, (162), 56 states have return successors, (200), 158 states have call predecessors, (200), 155 states have call successors, (200) [2022-11-03 03:56:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1272 transitions. [2022-11-03 03:56:33,661 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1272 transitions. Word has length 38 [2022-11-03 03:56:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:33,661 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1272 transitions. [2022-11-03 03:56:33,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:33,662 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1272 transitions. [2022-11-03 03:56:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 03:56:33,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:33,664 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] [2022-11-03 03:56:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 03:56:33,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1209870560, now seen corresponding path program 1 times [2022-11-03 03:56:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718808809] [2022-11-03 03:56:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:56:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:56:33,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:56:33,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718808809] [2022-11-03 03:56:33,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718808809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:33,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:56:33,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:56:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004302579] [2022-11-03 03:56:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:56:33,914 INFO L87 Difference]: Start difference. First operand 867 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:37,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:39,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:40,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:43,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:45,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:48,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:50,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:52,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:54,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:57,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:59,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:59,175 INFO L93 Difference]: Finished difference Result 894 states and 1298 transitions. [2022-11-03 03:56:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:56:59,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-11-03 03:56:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:59,180 INFO L225 Difference]: With dead ends: 894 [2022-11-03 03:56:59,180 INFO L226 Difference]: Without dead ends: 889 [2022-11-03 03:56:59,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:56:59,181 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 741 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 27 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:59,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1420 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 657 Invalid, 7 Unknown, 0 Unchecked, 25.1s Time] [2022-11-03 03:56:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-03 03:56:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 868. [2022-11-03 03:56:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 649 states have (on average 1.4036979969183359) internal successors, (911), 654 states have internal predecessors, (911), 162 states have call successors, (162), 55 states have call predecessors, (162), 56 states have return successors, (200), 158 states have call predecessors, (200), 155 states have call successors, (200) [2022-11-03 03:56:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1273 transitions. [2022-11-03 03:56:59,273 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1273 transitions. Word has length 39 [2022-11-03 03:56:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:59,273 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1273 transitions. [2022-11-03 03:56:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:56:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1273 transitions. [2022-11-03 03:56:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 03:56:59,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:59,276 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] [2022-11-03 03:56:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 03:56:59,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2093468749, now seen corresponding path program 1 times [2022-11-03 03:56:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:56:59,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304033867] [2022-11-03 03:56:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:57:18,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:18,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304033867] [2022-11-03 03:57:18,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304033867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:57:18,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:57:18,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:57:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427858388] [2022-11-03 03:57:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:57:18,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:57:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:57:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:57:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:57:18,705 INFO L87 Difference]: Start difference. First operand 868 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:57:22,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:24,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:26,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:29,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:33,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:35,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:37,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:57:37,120 INFO L93 Difference]: Finished difference Result 884 states and 1289 transitions. [2022-11-03 03:57:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:57:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-03 03:57:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:57:37,125 INFO L225 Difference]: With dead ends: 884 [2022-11-03 03:57:37,125 INFO L226 Difference]: Without dead ends: 881 [2022-11-03 03:57:37,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:57:37,126 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 583 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 158 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:57:37,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1511 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 442 Invalid, 6 Unknown, 0 Unchecked, 18.3s Time] [2022-11-03 03:57:37,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-03 03:57:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 857. [2022-11-03 03:57:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 641 states have (on average 1.4009360374414976) internal successors, (898), 647 states have internal predecessors, (898), 160 states have call successors, (160), 54 states have call predecessors, (160), 55 states have return successors, (195), 155 states have call predecessors, (195), 153 states have call successors, (195) [2022-11-03 03:57:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1253 transitions. [2022-11-03 03:57:37,223 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1253 transitions. Word has length 42 [2022-11-03 03:57:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:57:37,224 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1253 transitions. [2022-11-03 03:57:37,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:57:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1253 transitions. [2022-11-03 03:57:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:57:37,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:57:37,226 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] [2022-11-03 03:57:37,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 03:57:37,226 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:57:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:57:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 873219454, now seen corresponding path program 1 times [2022-11-03 03:57:37,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:57:37,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541992089] [2022-11-03 03:57:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:57:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:57:37,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:57:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541992089] [2022-11-03 03:57:37,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541992089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:57:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016133280] [2022-11-03 03:57:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:57:37,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:57:37,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:57:37,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:57:37,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:57:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:57:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:57:38,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:57:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:57:38,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:57:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:57:38,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016133280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:57:38,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1445248778] [2022-11-03 03:57:38,760 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 03:57:38,761 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:57:38,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:57:38,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:57:38,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:57:39,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 03:57:39,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 140 [2022-11-03 03:57:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 33 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 131 [2022-11-03 03:57:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,527 INFO L244 Elim1Store]: Index analysis took 114 ms [2022-11-03 03:57:39,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 03:57:39,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:40,023 INFO L244 Elim1Store]: Index analysis took 421 ms [2022-11-03 03:57:49,102 WARN L234 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 814 DAG size of output: 341 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:57:49,105 INFO L356 Elim1Store]: treesize reduction 4744, result has 21.3 percent of original size [2022-11-03 03:57:49,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 488 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 34 case distinctions, treesize of input 192 treesize of output 1391 [2022-11-03 03:57:49,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:57:50,813 INFO L244 Elim1Store]: Index analysis took 1323 ms [2022-11-03 03:58:08,267 WARN L234 SmtUtils]: Spent 17.43s on a formula simplification. DAG size of input: 1002 DAG size of output: 453 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:58:08,270 INFO L356 Elim1Store]: treesize reduction 6523, result has 17.2 percent of original size [2022-11-03 03:58:08,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 37 select indices, 37 select index equivalence classes, 509 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 194 case distinctions, treesize of input 292 treesize of output 1537 [2022-11-03 03:58:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:09,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:09,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 67 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1221 treesize of output 533 [2022-11-03 03:58:09,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 58 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 150 [2022-11-03 03:58:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:10,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 100 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 91 [2022-11-03 03:58:14,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:14,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:14,267 INFO L356 Elim1Store]: treesize reduction 177, result has 13.7 percent of original size [2022-11-03 03:58:14,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3964 treesize of output 2598 [2022-11-03 03:58:15,152 INFO L356 Elim1Store]: treesize reduction 744, result has 13.6 percent of original size [2022-11-03 03:58:15,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 24 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 27 case distinctions, treesize of input 3862 treesize of output 3844 [2022-11-03 03:58:15,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:15,609 INFO L356 Elim1Store]: treesize reduction 165, result has 14.5 percent of original size [2022-11-03 03:58:15,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3932 treesize of output 3887 [2022-11-03 03:58:21,660 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 03:58:21,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 03:58:21,711 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 03:58:21,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 03:58:21,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:58:21,858 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 03:58:21,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 03:58:21,909 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 03:58:21,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 03:58:21,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 03:58:22,158 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 03:58:22,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 03:58:22,220 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 03:58:22,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 03:58:22,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:58:22,516 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 03:58:22,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 03:58:22,562 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 03:58:22,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 03:58:22,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:58:22,792 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 03:58:22,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 03:58:22,857 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 03:58:22,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 03:58:22,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:58:23,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 97 [2022-11-03 03:58:23,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:58:23,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:58:23,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:58:23,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 03:58:23,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 03:58:23,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:58:23,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-03 03:58:23,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:58:23,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:58:24,367 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 119 for LOIs [2022-11-03 03:58:24,442 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:58:28,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1445248778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:58:28,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:58:28,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2022-11-03 03:58:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628474757] [2022-11-03 03:58:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:58:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:58:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:58:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:58:28,486 INFO L87 Difference]: Start difference. First operand 857 states and 1253 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:58:36,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:39,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:41,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:43,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:45,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:47,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:49,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:50,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:52,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:54,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:59,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:03,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:06,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:09,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:11,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:13,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:15,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:17,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:20,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:22,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:24,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:24,614 INFO L93 Difference]: Finished difference Result 1085 states and 1570 transitions. [2022-11-03 03:59:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:59:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-11-03 03:59:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:24,646 INFO L225 Difference]: With dead ends: 1085 [2022-11-03 03:59:24,646 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 03:59:24,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:59:24,648 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 16 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 4 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 815 IncrementalHoareTripleChecker+Unchecked, 55.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:24,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3802 Invalid, 2348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1515 Invalid, 14 Unknown, 815 Unchecked, 55.9s Time] [2022-11-03 03:59:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 03:59:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2022-11-03 03:59:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 643 states have (on average 1.3996889580093312) internal successors, (900), 648 states have internal predecessors, (900), 160 states have call successors, (160), 55 states have call predecessors, (160), 55 states have return successors, (195), 155 states have call predecessors, (195), 153 states have call successors, (195) [2022-11-03 03:59:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1255 transitions. [2022-11-03 03:59:24,757 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1255 transitions. Word has length 40 [2022-11-03 03:59:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:24,757 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1255 transitions. [2022-11-03 03:59:24,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 03:59:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1255 transitions. [2022-11-03 03:59:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 03:59:24,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:24,759 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] [2022-11-03 03:59:24,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:24,975 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -247957767, now seen corresponding path program 1 times [2022-11-03 03:59:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229951894] [2022-11-03 03:59:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:25,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229951894] [2022-11-03 03:59:25,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229951894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369009489] [2022-11-03 03:59:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:25,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:25,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:25,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:25,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:59:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:26,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:59:26,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:26,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:59:26,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369009489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:26,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968633589] [2022-11-03 03:59:26,409 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 03:59:26,409 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:26,409 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:26,410 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:26,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:26,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:26,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:26,731 INFO L244 Elim1Store]: Index analysis took 119 ms [2022-11-03 03:59:26,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 03:59:27,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:27,121 INFO L244 Elim1Store]: Index analysis took 350 ms [2022-11-03 03:59:34,237 WARN L234 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 814 DAG size of output: 341 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:59:34,239 INFO L356 Elim1Store]: treesize reduction 4744, result has 21.3 percent of original size [2022-11-03 03:59:34,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 488 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 34 case distinctions, treesize of input 192 treesize of output 1391 [2022-11-03 03:59:34,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:34,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:34,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:34,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:34,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:35,931 INFO L244 Elim1Store]: Index analysis took 1298 ms [2022-11-03 03:59:53,509 WARN L234 SmtUtils]: Spent 17.55s on a formula simplification. DAG size of input: 1002 DAG size of output: 453 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 03:59:53,510 INFO L356 Elim1Store]: treesize reduction 6523, result has 17.2 percent of original size [2022-11-03 03:59:53,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 37 select indices, 37 select index equivalence classes, 509 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 194 case distinctions, treesize of input 292 treesize of output 1537 [2022-11-03 03:59:54,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:54,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:54,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 89 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 140 [2022-11-03 03:59:54,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:54,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 57 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 131 [2022-11-03 03:59:54,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 65 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 03:59:55,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:55,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:55,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:55,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 67 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1221 treesize of output 533 [2022-11-03 03:59:55,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 58 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 150 [2022-11-03 03:59:55,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:55,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:55,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 100 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 91 [2022-11-03 03:59:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:59:59,336 INFO L356 Elim1Store]: treesize reduction 177, result has 13.7 percent of original size [2022-11-03 03:59:59,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3964 treesize of output 2598 [2022-11-03 04:00:00,288 INFO L356 Elim1Store]: treesize reduction 744, result has 13.6 percent of original size [2022-11-03 04:00:00,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 24 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 27 case distinctions, treesize of input 3862 treesize of output 3844 [2022-11-03 04:00:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:00,815 INFO L356 Elim1Store]: treesize reduction 165, result has 14.5 percent of original size [2022-11-03 04:00:00,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3932 treesize of output 3887 [2022-11-03 04:00:05,158 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:00:05,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:00:05,218 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:00:05,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:00:05,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:00:05,345 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:00:05,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:00:05,389 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:00:05,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:00:05,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:00:05,610 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:00:05,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:00:05,711 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:00:05,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:00:05,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:00:05,975 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 04:00:05,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 04:00:06,012 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:00:06,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 04:00:06,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:00:06,219 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:00:06,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:00:06,285 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:00:06,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:00:06,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:00:06,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 97 [2022-11-03 04:00:06,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:00:06,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:00:06,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:00:06,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:00:06,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 04:00:06,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 04:00:07,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-03 04:00:07,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:00:07,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:00:07,548 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 119 for LOIs [2022-11-03 04:00:07,606 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:11,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [968633589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:11,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:11,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3, 4] total 14 [2022-11-03 04:00:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646029305] [2022-11-03 04:00:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:00:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:00:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:00:11,357 INFO L87 Difference]: Start difference. First operand 859 states and 1255 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 04:00:18,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:21,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:24,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:26,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:29,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:31,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:33,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:35,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:35,300 INFO L93 Difference]: Finished difference Result 1090 states and 1572 transitions. [2022-11-03 04:00:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:00:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-11-03 04:00:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:35,334 INFO L225 Difference]: With dead ends: 1090 [2022-11-03 04:00:35,334 INFO L226 Difference]: Without dead ends: 861 [2022-11-03 04:00:35,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:00:35,336 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 18 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:35,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2369 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 648 Invalid, 8 Unknown, 401 Unchecked, 23.8s Time] [2022-11-03 04:00:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-11-03 04:00:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 859. [2022-11-03 04:00:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 643 states have (on average 1.3996889580093312) internal successors, (900), 648 states have internal predecessors, (900), 160 states have call successors, (160), 55 states have call predecessors, (160), 55 states have return successors, (195), 155 states have call predecessors, (195), 153 states have call successors, (195) [2022-11-03 04:00:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1255 transitions. [2022-11-03 04:00:35,445 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1255 transitions. Word has length 40 [2022-11-03 04:00:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:35,445 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1255 transitions. [2022-11-03 04:00:35,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 04:00:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1255 transitions. [2022-11-03 04:00:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 04:00:35,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:35,448 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] [2022-11-03 04:00:35,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:35,654 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1178324976, now seen corresponding path program 1 times [2022-11-03 04:00:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:35,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001363363] [2022-11-03 04:00:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:00:35,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:35,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001363363] [2022-11-03 04:00:35,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001363363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:35,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144086587] [2022-11-03 04:00:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:35,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:35,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:35,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:35,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:00:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:36,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:36,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:00:36,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144086587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:36,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:00:36,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2022-11-03 04:00:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554424450] [2022-11-03 04:00:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:00:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:00:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:00:36,968 INFO L87 Difference]: Start difference. First operand 859 states and 1255 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:00:43,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:47,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:49,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:51,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:54,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:56,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:59,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:01,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:01,828 INFO L93 Difference]: Finished difference Result 872 states and 1267 transitions. [2022-11-03 04:01:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:01:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-11-03 04:01:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:01,833 INFO L225 Difference]: With dead ends: 872 [2022-11-03 04:01:01,833 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 04:01:01,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:01:01,835 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 10 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:01,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4865 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 636 Invalid, 8 Unknown, 0 Unchecked, 24.7s Time] [2022-11-03 04:01:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 04:01:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2022-11-03 04:01:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 642 states have (on average 1.398753894080997) internal successors, (898), 647 states have internal predecessors, (898), 159 states have call successors, (159), 55 states have call predecessors, (159), 55 states have return successors, (194), 154 states have call predecessors, (194), 152 states have call successors, (194) [2022-11-03 04:01:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1251 transitions. [2022-11-03 04:01:01,949 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1251 transitions. Word has length 42 [2022-11-03 04:01:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:01,950 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1251 transitions. [2022-11-03 04:01:01,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:01:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1251 transitions. [2022-11-03 04:01:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 04:01:01,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:01,952 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] [2022-11-03 04:01:01,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:02,179 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 218526244, now seen corresponding path program 1 times [2022-11-03 04:01:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:02,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127347152] [2022-11-03 04:01:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 04:01:02,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127347152] [2022-11-03 04:01:02,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127347152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942988204] [2022-11-03 04:01:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:02,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:02,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:02,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:01:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:03,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:01:03,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:03,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:03,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942988204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:03,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:01:03,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2022-11-03 04:01:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637778462] [2022-11-03 04:01:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:03,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:01:03,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:01:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:01:03,455 INFO L87 Difference]: Start difference. First operand 857 states and 1251 transitions. Second operand has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:01:09,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:11,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:13,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:15,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:16,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:18,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:20,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:22,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:26,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:28,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:30,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:33,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:35,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:37,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:39,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:41,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:43,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:01:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:43,877 INFO L93 Difference]: Finished difference Result 869 states and 1262 transitions. [2022-11-03 04:01:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:01:43,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2022-11-03 04:01:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:43,882 INFO L225 Difference]: With dead ends: 869 [2022-11-03 04:01:43,882 INFO L226 Difference]: Without dead ends: 854 [2022-11-03 04:01:43,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:01:43,884 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 10 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:43,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4817 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 629 Invalid, 14 Unknown, 0 Unchecked, 40.3s Time] [2022-11-03 04:01:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-11-03 04:01:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2022-11-03 04:01:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 640 states have (on average 1.3984375) internal successors, (895), 645 states have internal predecessors, (895), 158 states have call successors, (158), 55 states have call predecessors, (158), 55 states have return successors, (193), 153 states have call predecessors, (193), 151 states have call successors, (193) [2022-11-03 04:01:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1246 transitions. [2022-11-03 04:01:44,008 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1246 transitions. Word has length 41 [2022-11-03 04:01:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:44,008 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1246 transitions. [2022-11-03 04:01:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 04:01:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1246 transitions. [2022-11-03 04:01:44,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 04:01:44,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:44,011 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] [2022-11-03 04:01:44,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:44,235 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1184800479, now seen corresponding path program 1 times [2022-11-03 04:01:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988375421] [2022-11-03 04:01:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:44,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:44,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988375421] [2022-11-03 04:01:44,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988375421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:44,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251820254] [2022-11-03 04:01:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:44,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:44,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:44,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:44,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:01:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:01:45,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:45,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 04:01:45,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251820254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:45,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212713273] [2022-11-03 04:01:45,729 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 04:01:45,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:45,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:45,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:45,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:45,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 04:01:45,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 140 [2022-11-03 04:01:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:45,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 33 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 131 [2022-11-03 04:01:46,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,177 INFO L244 Elim1Store]: Index analysis took 101 ms [2022-11-03 04:01:46,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 04:01:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:46,545 INFO L244 Elim1Store]: Index analysis took 318 ms [2022-11-03 04:01:55,472 WARN L234 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 814 DAG size of output: 341 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:01:55,474 INFO L356 Elim1Store]: treesize reduction 4744, result has 21.3 percent of original size [2022-11-03 04:01:55,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 488 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 34 case distinctions, treesize of input 192 treesize of output 1391 [2022-11-03 04:01:55,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:55,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:56,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:01:57,122 INFO L244 Elim1Store]: Index analysis took 1304 ms [2022-11-03 04:02:14,231 WARN L234 SmtUtils]: Spent 17.09s on a formula simplification. DAG size of input: 1002 DAG size of output: 453 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:02:14,232 INFO L356 Elim1Store]: treesize reduction 6523, result has 17.2 percent of original size [2022-11-03 04:02:14,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 37 select indices, 37 select index equivalence classes, 509 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 194 case distinctions, treesize of input 292 treesize of output 1537 [2022-11-03 04:02:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:15,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:15,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:15,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 67 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1221 treesize of output 533 [2022-11-03 04:02:15,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 58 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 150 [2022-11-03 04:02:15,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:15,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:15,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 100 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 91 [2022-11-03 04:02:18,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:18,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:18,389 INFO L356 Elim1Store]: treesize reduction 177, result has 13.7 percent of original size [2022-11-03 04:02:18,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3964 treesize of output 2598 [2022-11-03 04:02:19,116 INFO L356 Elim1Store]: treesize reduction 744, result has 13.6 percent of original size [2022-11-03 04:02:19,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 24 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 27 case distinctions, treesize of input 3862 treesize of output 3844 [2022-11-03 04:02:19,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:19,516 INFO L356 Elim1Store]: treesize reduction 165, result has 14.5 percent of original size [2022-11-03 04:02:19,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3932 treesize of output 3887 [2022-11-03 04:02:23,440 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:02:23,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:02:23,490 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:02:23,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:02:23,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:23,607 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 04:02:23,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 04:02:23,642 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:02:23,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 04:02:23,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:02:23,816 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:02:23,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:02:23,871 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:02:23,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:02:23,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:24,097 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 04:02:24,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 04:02:24,135 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:02:24,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 04:02:24,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:02:24,284 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:02:24,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:02:24,339 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:02:24,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:02:24,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:02:24,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 97 [2022-11-03 04:02:24,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:24,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:25,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:25,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:25,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-11-03 04:02:25,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 04:02:25,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-03 04:02:25,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:02:25,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:25,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:02:25,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:02:25,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:02:25,513 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:02:25,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2022-11-03 04:02:25,554 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 04:02:25,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-03 04:02:25,599 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 04:02:25,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-03 04:02:25,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:25,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:25,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:02:25,750 INFO L356 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-11-03 04:02:25,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-03 04:02:25,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:25,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,801 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:25,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:02:25,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:25,853 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:25,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:02:26,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:26,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:26,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:26,081 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:26,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:02:26,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:02:26,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:26,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:02:26,116 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:02:26,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:02:26,165 INFO L356 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-11-03 04:02:26,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-03 04:02:26,477 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 04:02:26,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 34 [2022-11-03 04:02:26,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:26,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:26,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:26,709 INFO L356 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-11-03 04:02:26,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 62 [2022-11-03 04:02:26,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:02:27,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:02:27,915 INFO L197 IcfgInterpreter]: Interpreting procedure errorFn with input of size 85 for LOIs [2022-11-03 04:02:27,937 INFO L197 IcfgInterpreter]: Interpreting procedure IofCompleteRequest with input of size 89 for LOIs [2022-11-03 04:02:27,967 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 119 for LOIs [2022-11-03 04:02:28,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:28,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:28,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:02:28,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:28,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:02:28,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:02:28,277 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:02:41,216 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74031#(and (<= ~pirp~0.offset 0) (<= ~pended~0 0) (<= (+ ~myStatus~0 1073741789) 0) (<= ~lowerDriverReturn~0 0) (<= 0 ~pended~0) (= 2 ~DC~0) (= ~s~0 ~DC~0) (<= ~setEventCalled~0 0) (= ~SKIP2~0 4) (<= 0 ~lowerDriverReturn~0) (= ~myIrp_PendingReturned~0 0) (<= 0 (+ ~myStatus~0 1073741789)) (<= 0 ~setEventCalled~0) (<= 0 ~compFptr~0.offset) (= 7 ~IPC~0) (exists ((|v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_42| Int)) (and (<= 0 |v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_42|) (= (select |#valid| |v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_42|) 0))) (= ~__BLAST_NONDET~0 0) (<= 0 ~pirp~0.base) (= ~routine~0 0) (= ~compFptr~0.base 0) (<= ~compRegistered~0 0) (= ~MPR1~0 5) (= ~customIrp~0 0) (= ~NP~0 1) (= |#NULL.offset| 0) (<= 0 ~pirp~0.offset) (<= 0 ~compRegistered~0) (= ~_SLAM_alloc_dummy~0 0) (<= 0 |#StackHeapBarrier|) (= ~MPR3~0 6) (<= ~compFptr~0.offset 0) (= ~SKIP1~0 3) (= ~UNLOADED~0 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:02:41,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:02:41,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:41,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 04:02:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104544413] [2022-11-03 04:02:41,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:41,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:02:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:02:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:02:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 04:02:41,218 INFO L87 Difference]: Start difference. First operand 854 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 04:02:44,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:47,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:49,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:51,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:54,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:56,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:02:58,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:00,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:02,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:05,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:07,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:07,038 INFO L93 Difference]: Finished difference Result 1710 states and 2498 transitions. [2022-11-03 04:03:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:07,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-03 04:03:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:07,070 INFO L225 Difference]: With dead ends: 1710 [2022-11-03 04:03:07,070 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 04:03:07,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 88 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2022-11-03 04:03:07,073 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 0 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 21 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:07,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2440 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 255 Invalid, 8 Unknown, 0 Unchecked, 25.7s Time] [2022-11-03 04:03:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 04:03:07,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2022-11-03 04:03:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 645 states have (on average 1.3953488372093024) internal successors, (900), 650 states have internal predecessors, (900), 158 states have call successors, (158), 55 states have call predecessors, (158), 55 states have return successors, (193), 153 states have call predecessors, (193), 151 states have call successors, (193) [2022-11-03 04:03:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1251 transitions. [2022-11-03 04:03:07,171 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1251 transitions. Word has length 41 [2022-11-03 04:03:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:07,171 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1251 transitions. [2022-11-03 04:03:07,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 04:03:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1251 transitions. [2022-11-03 04:03:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 04:03:07,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:07,174 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-03 04:03:07,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 04:03:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 04:03:07,387 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1946247396, now seen corresponding path program 2 times [2022-11-03 04:03:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:07,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723183352] [2022-11-03 04:03:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:07,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:03:07,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723183352] [2022-11-03 04:03:07,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723183352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:03:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262033675] [2022-11-03 04:03:07,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:03:07,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:03:07,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:07,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:03:07,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 04:03:09,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 04:03:09,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:03:09,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:03:09,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:03:09,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:03:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 04:03:09,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262033675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:03:09,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131945611] [2022-11-03 04:03:09,146 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 04:03:09,147 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:03:09,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:03:09,147 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:03:09,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:03:09,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 04:03:09,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 140 [2022-11-03 04:03:09,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 41 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 140 [2022-11-03 04:03:09,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 04:03:09,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:09,904 INFO L244 Elim1Store]: Index analysis took 272 ms [2022-11-03 04:03:26,247 WARN L234 SmtUtils]: Spent 16.33s on a formula simplification. DAG size of input: 1002 DAG size of output: 453 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:03:26,248 INFO L356 Elim1Store]: treesize reduction 6523, result has 17.2 percent of original size [2022-11-03 04:03:26,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 37 select indices, 37 select index equivalence classes, 509 disjoint index pairs (out of 666 index pairs), introduced 37 new quantified variables, introduced 194 case distinctions, treesize of input 292 treesize of output 1537 [2022-11-03 04:03:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:26,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 31 select indices, 31 select index equivalence classes, 645 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 292 [2022-11-03 04:03:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:27,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:27,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:27,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 67 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1221 treesize of output 533 [2022-11-03 04:03:27,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 58 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 150 [2022-11-03 04:03:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:27,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:27,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 100 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 91 [2022-11-03 04:03:30,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,412 INFO L356 Elim1Store]: treesize reduction 177, result has 13.7 percent of original size [2022-11-03 04:03:30,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3976 treesize of output 2610 [2022-11-03 04:03:31,258 INFO L356 Elim1Store]: treesize reduction 1012, result has 10.2 percent of original size [2022-11-03 04:03:31,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 24 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 27 case distinctions, treesize of input 3874 treesize of output 3842 [2022-11-03 04:03:31,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:31,655 INFO L356 Elim1Store]: treesize reduction 165, result has 14.5 percent of original size [2022-11-03 04:03:31,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 3930 treesize of output 3885 [2022-11-03 04:03:34,701 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:03:34,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:03:34,745 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:03:34,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:03:34,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:03:34,865 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 04:03:34,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 04:03:34,906 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:03:34,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 04:03:34,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:03:35,081 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:03:35,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:03:35,139 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:03:35,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:03:35,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:03:35,359 INFO L356 Elim1Store]: treesize reduction 37, result has 40.3 percent of original size [2022-11-03 04:03:35,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 96 [2022-11-03 04:03:35,394 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 04:03:35,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 64 [2022-11-03 04:03:35,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:03:35,529 INFO L356 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-03 04:03:35,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 113 [2022-11-03 04:03:35,583 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-03 04:03:35,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2022-11-03 04:03:35,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:03:36,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 97 [2022-11-03 04:03:36,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:36,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:36,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:36,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:36,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-11-03 04:03:36,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-03 04:03:36,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-03 04:03:36,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 04:03:36,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:03:36,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:36,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:36,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:03:36,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-03 04:03:36,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-03 04:03:36,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-03 04:03:36,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:36,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:36,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:03:36,759 INFO L356 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-11-03 04:03:36,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-03 04:03:36,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:36,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:36,807 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:36,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:03:36,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:36,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:36,852 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:36,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:03:37,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:37,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:37,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:37,049 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:37,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:03:37,119 INFO L356 Elim1Store]: treesize reduction 3, result has 78.6 percent of original size [2022-11-03 04:03:37,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-03 04:03:37,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:37,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:37,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:37,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:37,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2022-11-03 04:03:37,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:37,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:37,448 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 04:03:37,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 34 [2022-11-03 04:03:37,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:37,590 INFO L356 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2022-11-03 04:03:37,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 62 [2022-11-03 04:03:37,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-03 04:03:37,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 04:03:38,704 INFO L197 IcfgInterpreter]: Interpreting procedure errorFn with input of size 85 for LOIs [2022-11-03 04:03:38,729 INFO L197 IcfgInterpreter]: Interpreting procedure IofCompleteRequest with input of size 89 for LOIs [2022-11-03 04:03:38,754 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 119 for LOIs [2022-11-03 04:03:38,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:38,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:03:38,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:39,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:03:39,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:39,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 04:03:39,046 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:03:52,588 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '77911#(and (<= ~pirp~0.offset 0) (<= ~pended~0 0) (<= (+ ~myStatus~0 1073741789) 0) (<= ~lowerDriverReturn~0 0) (<= 0 ~pended~0) (= 2 ~DC~0) (= ~s~0 ~DC~0) (<= ~setEventCalled~0 0) (= ~SKIP2~0 4) (<= 0 ~lowerDriverReturn~0) (exists ((|v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_44| Int)) (and (<= 0 |v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_44|) (= (select |#valid| |v_ULTIMATE.start_CdAudio435DeviceControl_~#srb~7#1.base_44|) 0))) (= ~myIrp_PendingReturned~0 0) (<= 0 (+ ~myStatus~0 1073741789)) (<= 0 ~setEventCalled~0) (<= 0 ~compFptr~0.offset) (= 7 ~IPC~0) (= ~__BLAST_NONDET~0 0) (<= 0 ~pirp~0.base) (= ~routine~0 0) (= ~compFptr~0.base 0) (<= ~compRegistered~0 0) (= ~MPR1~0 5) (= ~customIrp~0 0) (= ~NP~0 1) (= |#NULL.offset| 0) (<= 0 ~pirp~0.offset) (<= 0 ~compRegistered~0) (= ~_SLAM_alloc_dummy~0 0) (<= 0 |#StackHeapBarrier|) (= ~MPR3~0 6) (<= ~compFptr~0.offset 0) (= ~SKIP1~0 3) (= ~UNLOADED~0 0) (= |#NULL.base| 0))' at error location [2022-11-03 04:03:52,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:03:52,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:03:52,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-03 04:03:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502668020] [2022-11-03 04:03:52,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:03:52,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:03:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:52,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:03:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-11-03 04:03:52,590 INFO L87 Difference]: Start difference. First operand 859 states and 1251 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 04:03:57,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:03:59,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:02,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:04,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:06,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:09,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:11,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:12,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:15,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:04:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:15,041 INFO L93 Difference]: Finished difference Result 1724 states and 2517 transitions. [2022-11-03 04:04:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:04:15,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-11-03 04:04:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:15,072 INFO L225 Difference]: With dead ends: 1724 [2022-11-03 04:04:15,072 INFO L226 Difference]: Without dead ends: 869 [2022-11-03 04:04:15,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 04:04:15,075 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 0 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:15,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3050 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 337 Invalid, 7 Unknown, 0 Unchecked, 22.2s Time] [2022-11-03 04:04:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-03 04:04:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2022-11-03 04:04:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 655 states have (on average 1.3893129770992367) internal successors, (910), 660 states have internal predecessors, (910), 158 states have call successors, (158), 55 states have call predecessors, (158), 55 states have return successors, (193), 153 states have call predecessors, (193), 151 states have call successors, (193) [2022-11-03 04:04:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1261 transitions. [2022-11-03 04:04:15,172 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1261 transitions. Word has length 46 [2022-11-03 04:04:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:15,172 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1261 transitions. [2022-11-03 04:04:15,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 04:04:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1261 transitions. [2022-11-03 04:04:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:04:15,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:15,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:15,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:15,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 04:04:15,403 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:15,404 INFO L85 PathProgramCache]: Analyzing trace with hash 737048732, now seen corresponding path program 3 times [2022-11-03 04:04:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:15,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53083061] [2022-11-03 04:04:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:15,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 04:04:15,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53083061] [2022-11-03 04:04:15,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53083061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:15,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373387819] [2022-11-03 04:04:15,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 04:04:15,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:15,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:15,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:15,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0a394e-dffd-4204-8c13-ac859bc06ece/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 04:04:17,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 04:04:17,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:04:17,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 04:04:17,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 04:04:17,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 04:04:17,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373387819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:17,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106513491] [2022-11-03 04:04:17,383 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2022-11-03 04:04:17,383 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:17,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:17,384 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:17,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:17,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 43 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 140 [2022-11-03 04:04:17,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 41 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 140 [2022-11-03 04:04:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:17,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2022-11-03 04:04:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:04:18,124 INFO L244 Elim1Store]: Index analysis took 296 ms