./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 43b0b0e7f04e616d4ffd78d271cc25ed070748109bcdbd8bb038fa35c2350c4a --- 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 [2022-11-02 19:55:57,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:55:57,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:55:57,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:55:57,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:55:57,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:55:57,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:55:57,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:55:57,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:55:57,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:55:57,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:55:57,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:55:57,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:55:57,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:55:57,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:55:57,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:55:57,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:55:57,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:55:57,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:55:57,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:55:57,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:55:57,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:55:57,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:55:57,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:55:57,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:55:57,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:55:57,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:55:57,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:55:57,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:55:57,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:55:57,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:55:57,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:55:57,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:55:57,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:55:57,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:55:57,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:55:57,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:55:57,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:55:57,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:55:57,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:55:57,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:55:57,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:55:57,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:55:57,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:55:57,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:55:57,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:55:57,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:55:57,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:55:57,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:55:57,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:55:57,234 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:55:57,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:55:57,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:55:57,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:55:57,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:55:57,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:55:57,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:55:57,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:55:57,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:55:57,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:55:57,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:55:57,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:55:57,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:55:57,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:55:57,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:55:57,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:55:57,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:55:57,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:55:57,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:55:57,240 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:55:57,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:55:57,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:55:57,241 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_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b0b0e7f04e616d4ffd78d271cc25ed070748109bcdbd8bb038fa35c2350c4a [2022-11-02 19:55:57,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:55:57,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:55:57,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:55:57,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:55:57,585 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:55:57,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2022-11-02 19:55:57,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/data/1c61924cf/00d2a592431641efabfbd4debe1e88e0/FLAG1f1492cb2 [2022-11-02 19:55:58,417 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:55:58,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2022-11-02 19:55:58,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/data/1c61924cf/00d2a592431641efabfbd4debe1e88e0/FLAG1f1492cb2 [2022-11-02 19:55:58,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/data/1c61924cf/00d2a592431641efabfbd4debe1e88e0 [2022-11-02 19:55:58,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:55:58,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:55:58,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:55:58,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:55:58,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:55:58,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:58" (1/1) ... [2022-11-02 19:55:58,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc2c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:58, skipping insertion in model container [2022-11-02 19:55:58,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:58" (1/1) ... [2022-11-02 19:55:58,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:55:58,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:55:58,994 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_11cd9c91-feb6-4b15-80b9-84c909293475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c[1110,1123] [2022-11-02 19:55:59,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:55:59,681 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:55:59,691 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_11cd9c91-feb6-4b15-80b9-84c909293475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c[1110,1123] [2022-11-02 19:56:00,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:00,047 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:56:00,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00 WrapperNode [2022-11-02 19:56:00,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:00,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:00,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:56:00,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:56:00,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:00,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:00,598 INFO L138 Inliner]: procedures = 11, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6576 [2022-11-02 19:56:00,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:00,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:56:00,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:56:00,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:56:00,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:00,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:00,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:00,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,155 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:56:01,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:56:01,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:56:01,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:56:01,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:01,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:01,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:56:01,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cd9c91-feb6-4b15-80b9-84c909293475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:56:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:56:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:56:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 19:56:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 19:56:02,272 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:56:02,274 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:56:17,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:56:17,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:56:17,544 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:56:17,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:17 BoogieIcfgContainer [2022-11-02 19:56:17,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:56:17,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:56:17,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:56:17,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:56:17,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:55:58" (1/3) ... [2022-11-02 19:56:17,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751528cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:17, skipping insertion in model container [2022-11-02 19:56:17,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (2/3) ... [2022-11-02 19:56:17,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751528cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:17, skipping insertion in model container [2022-11-02 19:56:17,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:17" (3/3) ... [2022-11-02 19:56:17,559 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d32_e0.c [2022-11-02 19:56:17,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:56:17,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:56:17,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:56:17,676 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41e57fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:56:17,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:56:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 879 states, 863 states have (on average 1.4913093858632678) internal successors, (1287), 864 states have internal predecessors, (1287), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:56:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:56:17,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:17,719 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:17,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1737916692, now seen corresponding path program 1 times [2022-11-02 19:56:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:17,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929421916] [2022-11-02 19:56:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:56:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:56:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:56:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:56:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:56:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:56:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:56:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:56:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:56:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:56:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:56:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:56:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:56:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:56:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:56,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929421916] [2022-11-02 19:56:56,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929421916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:56,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:56,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69472381] [2022-11-02 19:56:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:56,707 INFO L87 Difference]: Start difference. First operand has 879 states, 863 states have (on average 1.4913093858632678) internal successors, (1287), 864 states have internal predecessors, (1287), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:56:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:59,318 INFO L93 Difference]: Finished difference Result 2662 states and 4026 transitions. [2022-11-02 19:56:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:56:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:56:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:59,346 INFO L225 Difference]: With dead ends: 2662 [2022-11-02 19:56:59,346 INFO L226 Difference]: Without dead ends: 1785 [2022-11-02 19:56:59,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:56:59,358 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 7601 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7601 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:59,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7601 Valid, 4223 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 19:56:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-11-02 19:56:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 881. [2022-11-02 19:56:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 866 states have (on average 1.48729792147806) internal successors, (1288), 866 states have internal predecessors, (1288), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:56:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1314 transitions. [2022-11-02 19:56:59,475 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1314 transitions. Word has length 345 [2022-11-02 19:56:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:59,476 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1314 transitions. [2022-11-02 19:56:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:56:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1314 transitions. [2022-11-02 19:56:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:56:59,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:59,484 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:56:59,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:59,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1465862098, now seen corresponding path program 1 times [2022-11-02 19:56:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:59,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912070358] [2022-11-02 19:56:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:59,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:57:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:57:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:57:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:57:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:57:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:57:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:57:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:57:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:57:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:57:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:57:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:57:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:57:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:57:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:27,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912070358] [2022-11-02 19:57:27,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912070358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:27,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:27,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492057734] [2022-11-02 19:57:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:27,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:27,703 INFO L87 Difference]: Start difference. First operand 881 states and 1314 transitions. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:57:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:31,818 INFO L93 Difference]: Finished difference Result 2750 states and 4105 transitions. [2022-11-02 19:57:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:57:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:57:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:31,828 INFO L225 Difference]: With dead ends: 2750 [2022-11-02 19:57:31,829 INFO L226 Difference]: Without dead ends: 1871 [2022-11-02 19:57:31,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:57:31,833 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 7347 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7347 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:31,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7347 Valid, 4784 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 19:57:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2022-11-02 19:57:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 889. [2022-11-02 19:57:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 874 states have (on average 1.4862700228832952) internal successors, (1299), 874 states have internal predecessors, (1299), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:57:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1325 transitions. [2022-11-02 19:57:31,876 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1325 transitions. Word has length 345 [2022-11-02 19:57:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:31,877 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1325 transitions. [2022-11-02 19:57:31,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:57:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1325 transitions. [2022-11-02 19:57:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:57:31,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:31,885 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:57:31,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:31,886 INFO L85 PathProgramCache]: Analyzing trace with hash 776030608, now seen corresponding path program 1 times [2022-11-02 19:57:31,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:31,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426418539] [2022-11-02 19:57:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:31,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:57:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:57:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:57:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:57:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:57:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:57:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:57:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:57:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:57:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:57:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:57:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:57:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:57:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:57:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:50,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426418539] [2022-11-02 19:57:50,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426418539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:50,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:50,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:57:50,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721689561] [2022-11-02 19:57:50,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:50,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:57:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:57:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:57:50,297 INFO L87 Difference]: Start difference. First operand 889 states and 1325 transitions. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:57:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:53,748 INFO L93 Difference]: Finished difference Result 2950 states and 4401 transitions. [2022-11-02 19:57:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:57:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:57:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:53,758 INFO L225 Difference]: With dead ends: 2950 [2022-11-02 19:57:53,758 INFO L226 Difference]: Without dead ends: 2063 [2022-11-02 19:57:53,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:57:53,762 INFO L413 NwaCegarLoop]: 1973 mSDtfsCounter, 5886 mSDsluCounter, 3661 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5886 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:53,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5886 Valid, 5634 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 19:57:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-11-02 19:57:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 917. [2022-11-02 19:57:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 902 states have (on average 1.4855875831485588) internal successors, (1340), 902 states have internal predecessors, (1340), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:57:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1366 transitions. [2022-11-02 19:57:53,808 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1366 transitions. Word has length 345 [2022-11-02 19:57:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:53,810 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1366 transitions. [2022-11-02 19:57:53,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:57:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1366 transitions. [2022-11-02 19:57:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:57:53,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:53,817 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:53,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:57:53,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:53,818 INFO L85 PathProgramCache]: Analyzing trace with hash -595776690, now seen corresponding path program 1 times [2022-11-02 19:57:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:53,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524095688] [2022-11-02 19:57:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:58:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:58:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:58:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:58:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:58:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:58:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:58:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:58:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:58:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:58:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:58:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:58:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:58:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:58:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524095688] [2022-11-02 19:58:16,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524095688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:16,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:16,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951676247] [2022-11-02 19:58:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:16,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:16,342 INFO L87 Difference]: Start difference. First operand 917 states and 1366 transitions. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:58:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:20,516 INFO L93 Difference]: Finished difference Result 2950 states and 4398 transitions. [2022-11-02 19:58:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:58:20,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:58:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:20,525 INFO L225 Difference]: With dead ends: 2950 [2022-11-02 19:58:20,525 INFO L226 Difference]: Without dead ends: 2035 [2022-11-02 19:58:20,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:58:20,529 INFO L413 NwaCegarLoop]: 1780 mSDtfsCounter, 8317 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8317 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:20,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8317 Valid, 5154 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 19:58:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-02 19:58:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 935. [2022-11-02 19:58:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 920 states have (on average 1.4847826086956522) internal successors, (1366), 920 states have internal predecessors, (1366), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:58:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1392 transitions. [2022-11-02 19:58:20,576 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1392 transitions. Word has length 345 [2022-11-02 19:58:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:20,577 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1392 transitions. [2022-11-02 19:58:20,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:58:20,578 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1392 transitions. [2022-11-02 19:58:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:58:20,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:20,584 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:58:20,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1219058292, now seen corresponding path program 1 times [2022-11-02 19:58:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:20,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089397689] [2022-11-02 19:58:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:58:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:58:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:58:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:58:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:58:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:58:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:58:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:58:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:58:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:58:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:58:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:58:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:58:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:58:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:58:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:58:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089397689] [2022-11-02 19:58:57,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089397689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:57,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:57,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:57,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724254542] [2022-11-02 19:58:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:57,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:58:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:57,026 INFO L87 Difference]: Start difference. First operand 935 states and 1392 transitions. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:58:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:59,612 INFO L93 Difference]: Finished difference Result 2838 states and 4229 transitions. [2022-11-02 19:58:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:58:59,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:58:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:59,619 INFO L225 Difference]: With dead ends: 2838 [2022-11-02 19:58:59,620 INFO L226 Difference]: Without dead ends: 1905 [2022-11-02 19:58:59,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-11-02 19:58:59,623 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 8754 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8754 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:59,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8754 Valid, 4244 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 19:58:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2022-11-02 19:58:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 941. [2022-11-02 19:58:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 926 states have (on average 1.4838012958963283) internal successors, (1374), 926 states have internal predecessors, (1374), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:58:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1400 transitions. [2022-11-02 19:58:59,671 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1400 transitions. Word has length 345 [2022-11-02 19:58:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:59,672 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1400 transitions. [2022-11-02 19:58:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:58:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1400 transitions. [2022-11-02 19:58:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:58:59,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:59,679 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:58:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:58:59,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash 316338378, now seen corresponding path program 1 times [2022-11-02 19:58:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:58:59,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592016407] [2022-11-02 19:58:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:59:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:59:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:59:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:59:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:59:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:59:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:59:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:59:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:59:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:59:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:59:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:59:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:59:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:59:15,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:15,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592016407] [2022-11-02 19:59:15,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592016407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:15,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:15,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:15,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122586678] [2022-11-02 19:59:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:15,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:15,894 INFO L87 Difference]: Start difference. First operand 941 states and 1400 transitions. Second operand has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:59:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:21,391 INFO L93 Difference]: Finished difference Result 2560 states and 3809 transitions. [2022-11-02 19:59:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:59:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:21,401 INFO L225 Difference]: With dead ends: 2560 [2022-11-02 19:59:21,401 INFO L226 Difference]: Without dead ends: 2558 [2022-11-02 19:59:21,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:59:21,404 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 8603 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8603 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:21,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8603 Valid, 5115 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 19:59:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2022-11-02 19:59:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1269. [2022-11-02 19:59:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1254 states have (on average 1.4832535885167464) internal successors, (1860), 1254 states have internal predecessors, (1860), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 19:59:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1886 transitions. [2022-11-02 19:59:21,462 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1886 transitions. Word has length 345 [2022-11-02 19:59:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:21,463 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1886 transitions. [2022-11-02 19:59:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.42857142857143) internal successors, (283), 7 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:59:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1886 transitions. [2022-11-02 19:59:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-02 19:59:21,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:21,467 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:59:21,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -219575672, now seen corresponding path program 1 times [2022-11-02 19:59:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050050583] [2022-11-02 19:59:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:59:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:59:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 19:59:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 19:59:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 19:59:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 19:59:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 19:59:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 19:59:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 19:59:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 19:59:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 19:59:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-02 19:59:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-02 19:59:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-02 19:59:23,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:23,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050050583] [2022-11-02 19:59:23,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050050583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:23,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:23,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:59:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417239571] [2022-11-02 19:59:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:59:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:59:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:59:23,207 INFO L87 Difference]: Start difference. First operand 1269 states and 1886 transitions. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:59:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:23,698 INFO L93 Difference]: Finished difference Result 3496 states and 5203 transitions. [2022-11-02 19:59:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:23,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 345 [2022-11-02 19:59:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:23,713 INFO L225 Difference]: With dead ends: 3496 [2022-11-02 19:59:23,713 INFO L226 Difference]: Without dead ends: 2229 [2022-11-02 19:59:23,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:23,716 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 2529 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:23,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 4009 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:59:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-11-02 19:59:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1297. [2022-11-02 19:59:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1269 states have (on average 1.4775413711583925) internal successors, (1875), 1269 states have internal predecessors, (1875), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-02 19:59:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1927 transitions. [2022-11-02 19:59:23,791 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1927 transitions. Word has length 345 [2022-11-02 19:59:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:23,791 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 1927 transitions. [2022-11-02 19:59:23,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-02 19:59:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1927 transitions. [2022-11-02 19:59:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2022-11-02 19:59:23,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:23,808 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:23,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:59:23,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:23,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2042338359, now seen corresponding path program 1 times [2022-11-02 19:59:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:23,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803343775] [2022-11-02 19:59:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat