./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:57:10,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:57:10,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:57:10,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:57:10,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:57:10,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:57:10,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:57:10,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:57:10,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:57:10,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:57:10,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:57:10,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:57:10,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:57:10,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:57:10,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:57:10,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:57:10,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:57:10,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:57:10,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:57:11,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:57:11,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:57:11,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:57:11,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:57:11,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:57:11,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:57:11,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:57:11,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:57:11,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:57:11,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:57:11,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:57:11,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:57:11,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:57:11,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:57:11,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:57:11,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:57:11,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:57:11,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:57:11,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:57:11,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:57:11,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:57:11,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:57:11,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:57:11,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:57:11,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:57:11,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:57:11,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:57:11,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:57:11,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:57:11,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:57:11,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:57:11,119 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:57:11,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:57:11,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:57:11,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:57:11,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:57:11,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:57:11,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:57:11,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:57:11,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:57:11,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:57:11,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:57:11,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:57:11,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:57:11,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:57:11,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:57:11,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:57:11,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:11,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:57:11,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:57:11,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:57:11,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:57:11,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:57:11,126 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:57:11,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:57:11,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:57:11,127 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_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2022-11-20 11:57:11,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:57:11,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:57:11,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:57:11,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:57:11,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:57:11,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/locks/test_locks_7.c [2022-11-20 11:57:14,859 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:57:15,074 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:57:15,074 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/sv-benchmarks/c/locks/test_locks_7.c [2022-11-20 11:57:15,083 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/data/cedac03d7/bc4bde61b9d64d9bba01bdc639e61714/FLAGb88630668 [2022-11-20 11:57:15,110 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/data/cedac03d7/bc4bde61b9d64d9bba01bdc639e61714 [2022-11-20 11:57:15,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:57:15,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:57:15,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:15,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:57:15,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:57:15,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0d413a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15, skipping insertion in model container [2022-11-20 11:57:15,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:57:15,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:57:15,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-11-20 11:57:15,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:15,397 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:57:15,420 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2022-11-20 11:57:15,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:15,436 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:57:15,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15 WrapperNode [2022-11-20 11:57:15,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:15,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:15,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:57:15,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:57:15,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,475 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2022-11-20 11:57:15,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:15,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:57:15,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:57:15,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:57:15,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,499 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:57:15,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:57:15,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:57:15,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:57:15,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (1/1) ... [2022-11-20 11:57:15,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:15,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:15,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:57:15,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:57:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:57:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:57:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:57:15,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:57:15,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:57:15,720 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:57:16,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:57:16,044 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:57:16,045 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:57:16,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:16 BoogieIcfgContainer [2022-11-20 11:57:16,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:57:16,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:57:16,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:57:16,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:57:16,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:57:15" (1/3) ... [2022-11-20 11:57:16,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276f71c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:16, skipping insertion in model container [2022-11-20 11:57:16,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:15" (2/3) ... [2022-11-20 11:57:16,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276f71c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:16, skipping insertion in model container [2022-11-20 11:57:16,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:16" (3/3) ... [2022-11-20 11:57:16,060 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2022-11-20 11:57:16,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:57:16,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:57:16,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:57:16,144 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;@923ee7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:57:16,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:57:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:57:16,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:16,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:16,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,164 INFO L85 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2022-11-20 11:57:16,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666731162] [2022-11-20 11:57:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666731162] [2022-11-20 11:57:16,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666731162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:16,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:16,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529025642] [2022-11-20 11:57:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:16,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,457 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:16,509 INFO L93 Difference]: Finished difference Result 65 states and 109 transitions. [2022-11-20 11:57:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:57:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:16,525 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:57:16,526 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:57:16,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,534 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:16,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 103 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:57:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2022-11-20 11:57:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 34 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2022-11-20 11:57:16,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2022-11-20 11:57:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:16,598 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2022-11-20 11:57:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2022-11-20 11:57:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:57:16,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:16,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:16,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:57:16,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2022-11-20 11:57:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508331453] [2022-11-20 11:57:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:16,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:16,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508331453] [2022-11-20 11:57:16,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508331453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:16,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:16,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846658538] [2022-11-20 11:57:16,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:16,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,771 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:16,803 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2022-11-20 11:57:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:16,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:57:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:16,805 INFO L225 Difference]: With dead ends: 84 [2022-11-20 11:57:16,805 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:57:16,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,808 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:16,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:57:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-11-20 11:57:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 48 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2022-11-20 11:57:16,834 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2022-11-20 11:57:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:16,834 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2022-11-20 11:57:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2022-11-20 11:57:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:57:16,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:16,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:57:16,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2022-11-20 11:57:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635407231] [2022-11-20 11:57:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:16,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635407231] [2022-11-20 11:57:16,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635407231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:16,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:16,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838110460] [2022-11-20 11:57:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,916 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:16,941 INFO L93 Difference]: Finished difference Result 78 states and 132 transitions. [2022-11-20 11:57:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:16,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 11:57:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:16,944 INFO L225 Difference]: With dead ends: 78 [2022-11-20 11:57:16,944 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:57:16,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:16,946 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:16,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 112 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:57:16,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-20 11:57:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 51 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2022-11-20 11:57:16,958 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2022-11-20 11:57:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2022-11-20 11:57:16,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2022-11-20 11:57:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:57:16,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:16,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:57:16,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2022-11-20 11:57:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724493707] [2022-11-20 11:57:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724493707] [2022-11-20 11:57:17,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724493707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549278843] [2022-11-20 11:57:17,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,039 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,063 INFO L93 Difference]: Finished difference Result 97 states and 165 transitions. [2022-11-20 11:57:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 11:57:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,065 INFO L225 Difference]: With dead ends: 97 [2022-11-20 11:57:17,066 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 11:57:17,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,068 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 30 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 11:57:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2022-11-20 11:57:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 68 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2022-11-20 11:57:17,087 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2022-11-20 11:57:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,088 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2022-11-20 11:57:17,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2022-11-20 11:57:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:57:17,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:57:17,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2022-11-20 11:57:17,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240174970] [2022-11-20 11:57:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240174970] [2022-11-20 11:57:17,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240174970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932004137] [2022-11-20 11:57:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,216 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,269 INFO L93 Difference]: Finished difference Result 161 states and 275 transitions. [2022-11-20 11:57:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 11:57:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,272 INFO L225 Difference]: With dead ends: 161 [2022-11-20 11:57:17,272 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 11:57:17,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,274 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 11:57:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2022-11-20 11:57:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 94 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2022-11-20 11:57:17,300 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2022-11-20 11:57:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,308 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2022-11-20 11:57:17,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2022-11-20 11:57:17,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:57:17,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:57:17,310 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2022-11-20 11:57:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523036788] [2022-11-20 11:57:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523036788] [2022-11-20 11:57:17,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523036788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326526403] [2022-11-20 11:57:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,383 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,420 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2022-11-20 11:57:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:57:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,434 INFO L225 Difference]: With dead ends: 144 [2022-11-20 11:57:17,434 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 11:57:17,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,437 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 34 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 11:57:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2022-11-20 11:57:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.65625) internal successors, (159), 96 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2022-11-20 11:57:17,451 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2022-11-20 11:57:17,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,452 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2022-11-20 11:57:17,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2022-11-20 11:57:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:57:17,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:17,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,455 INFO L85 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2022-11-20 11:57:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012829319] [2022-11-20 11:57:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012829319] [2022-11-20 11:57:17,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012829319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98259308] [2022-11-20 11:57:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,518 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,567 INFO L93 Difference]: Finished difference Result 273 states and 449 transitions. [2022-11-20 11:57:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:57:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,570 INFO L225 Difference]: With dead ends: 273 [2022-11-20 11:57:17,570 INFO L226 Difference]: Without dead ends: 183 [2022-11-20 11:57:17,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,573 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-20 11:57:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-11-20 11:57:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6166666666666667) internal successors, (291), 180 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2022-11-20 11:57:17,620 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2022-11-20 11:57:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,620 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2022-11-20 11:57:17,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2022-11-20 11:57:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:57:17,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:57:17,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2022-11-20 11:57:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725840266] [2022-11-20 11:57:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725840266] [2022-11-20 11:57:17,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725840266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148440863] [2022-11-20 11:57:17,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,709 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,763 INFO L93 Difference]: Finished difference Result 225 states and 365 transitions. [2022-11-20 11:57:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:57:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,765 INFO L225 Difference]: With dead ends: 225 [2022-11-20 11:57:17,765 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 11:57:17,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,767 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 116 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 11:57:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2022-11-20 11:57:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5944444444444446) internal successors, (287), 180 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2022-11-20 11:57:17,803 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2022-11-20 11:57:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,803 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2022-11-20 11:57:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2022-11-20 11:57:17,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:57:17,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:57:17,806 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2022-11-20 11:57:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351168188] [2022-11-20 11:57:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351168188] [2022-11-20 11:57:17,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351168188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032737002] [2022-11-20 11:57:17,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,903 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:17,929 INFO L93 Difference]: Finished difference Result 325 states and 521 transitions. [2022-11-20 11:57:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:57:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:17,932 INFO L225 Difference]: With dead ends: 325 [2022-11-20 11:57:17,932 INFO L226 Difference]: Without dead ends: 323 [2022-11-20 11:57:17,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,934 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 85 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-20 11:57:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2022-11-20 11:57:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.55859375) internal successors, (399), 256 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2022-11-20 11:57:17,956 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2022-11-20 11:57:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:17,956 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2022-11-20 11:57:17,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:17,957 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2022-11-20 11:57:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:57:17,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:17,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:17,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:57:17,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:17,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2022-11-20 11:57:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:17,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232869124] [2022-11-20 11:57:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:17,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232869124] [2022-11-20 11:57:17,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232869124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:17,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:17,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:17,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052284720] [2022-11-20 11:57:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:17,998 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,026 INFO L93 Difference]: Finished difference Result 597 states and 929 transitions. [2022-11-20 11:57:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:57:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,029 INFO L225 Difference]: With dead ends: 597 [2022-11-20 11:57:18,029 INFO L226 Difference]: Without dead ends: 347 [2022-11-20 11:57:18,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,032 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 104 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-20 11:57:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2022-11-20 11:57:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.5203488372093024) internal successors, (523), 344 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2022-11-20 11:57:18,056 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2022-11-20 11:57:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,057 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2022-11-20 11:57:18,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2022-11-20 11:57:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:57:18,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:57:18,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2022-11-20 11:57:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895162521] [2022-11-20 11:57:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895162521] [2022-11-20 11:57:18,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895162521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935266860] [2022-11-20 11:57:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,100 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,125 INFO L93 Difference]: Finished difference Result 525 states and 793 transitions. [2022-11-20 11:57:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:57:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,128 INFO L225 Difference]: With dead ends: 525 [2022-11-20 11:57:18,128 INFO L226 Difference]: Without dead ends: 359 [2022-11-20 11:57:18,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,130 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-20 11:57:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-11-20 11:57:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.4915730337078652) internal successors, (531), 356 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-11-20 11:57:18,153 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2022-11-20 11:57:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,154 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-11-20 11:57:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-11-20 11:57:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:57:18,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:57:18,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2022-11-20 11:57:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996150060] [2022-11-20 11:57:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996150060] [2022-11-20 11:57:18,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996150060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026539600] [2022-11-20 11:57:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,189 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,217 INFO L93 Difference]: Finished difference Result 617 states and 925 transitions. [2022-11-20 11:57:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:57:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,221 INFO L225 Difference]: With dead ends: 617 [2022-11-20 11:57:18,221 INFO L226 Difference]: Without dead ends: 615 [2022-11-20 11:57:18,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,222 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-20 11:57:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2022-11-20 11:57:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 1.447674418604651) internal successors, (747), 516 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2022-11-20 11:57:18,245 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2022-11-20 11:57:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,245 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2022-11-20 11:57:18,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2022-11-20 11:57:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:57:18,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:57:18,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2022-11-20 11:57:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47452189] [2022-11-20 11:57:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47452189] [2022-11-20 11:57:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47452189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610090254] [2022-11-20 11:57:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,289 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,336 INFO L93 Difference]: Finished difference Result 1177 states and 1693 transitions. [2022-11-20 11:57:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 11:57:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,340 INFO L225 Difference]: With dead ends: 1177 [2022-11-20 11:57:18,340 INFO L226 Difference]: Without dead ends: 679 [2022-11-20 11:57:18,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,345 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-20 11:57:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2022-11-20 11:57:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.400887573964497) internal successors, (947), 676 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2022-11-20 11:57:18,383 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2022-11-20 11:57:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,386 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2022-11-20 11:57:18,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,386 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2022-11-20 11:57:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:57:18,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:57:18,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2022-11-20 11:57:18,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262961809] [2022-11-20 11:57:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262961809] [2022-11-20 11:57:18,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262961809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842334458] [2022-11-20 11:57:18,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,440 INFO L87 Difference]: Start difference. First operand 677 states and 947 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,477 INFO L93 Difference]: Finished difference Result 1017 states and 1413 transitions. [2022-11-20 11:57:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:57:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,481 INFO L225 Difference]: With dead ends: 1017 [2022-11-20 11:57:18,481 INFO L226 Difference]: Without dead ends: 695 [2022-11-20 11:57:18,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,483 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-20 11:57:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2022-11-20 11:57:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.3684971098265897) internal successors, (947), 692 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2022-11-20 11:57:18,519 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2022-11-20 11:57:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2022-11-20 11:57:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2022-11-20 11:57:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:57:18,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:57:18,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2022-11-20 11:57:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437771242] [2022-11-20 11:57:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437771242] [2022-11-20 11:57:18,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437771242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393235092] [2022-11-20 11:57:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,572 INFO L87 Difference]: Start difference. First operand 693 states and 947 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,620 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2022-11-20 11:57:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:57:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,626 INFO L225 Difference]: With dead ends: 1161 [2022-11-20 11:57:18,626 INFO L226 Difference]: Without dead ends: 1159 [2022-11-20 11:57:18,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,628 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-20 11:57:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2022-11-20 11:57:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.325875486381323) internal successors, (1363), 1028 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2022-11-20 11:57:18,676 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2022-11-20 11:57:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,676 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2022-11-20 11:57:18,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2022-11-20 11:57:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:57:18,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:57:18,679 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2022-11-20 11:57:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377857553] [2022-11-20 11:57:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377857553] [2022-11-20 11:57:18,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377857553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986112058] [2022-11-20 11:57:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,707 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,766 INFO L93 Difference]: Finished difference Result 2313 states and 3029 transitions. [2022-11-20 11:57:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 11:57:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,772 INFO L225 Difference]: With dead ends: 2313 [2022-11-20 11:57:18,772 INFO L226 Difference]: Without dead ends: 1319 [2022-11-20 11:57:18,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,775 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2022-11-20 11:57:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2022-11-20 11:57:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.2667173252279635) internal successors, (1667), 1316 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2022-11-20 11:57:18,841 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2022-11-20 11:57:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:18,842 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2022-11-20 11:57:18,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2022-11-20 11:57:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:57:18,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:18,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:18,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:57:18,845 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2022-11-20 11:57:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:18,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879448228] [2022-11-20 11:57:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:18,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:18,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879448228] [2022-11-20 11:57:18,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879448228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:18,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:18,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058721013] [2022-11-20 11:57:18,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,888 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:18,939 INFO L93 Difference]: Finished difference Result 1977 states and 2485 transitions. [2022-11-20 11:57:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 11:57:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:18,944 INFO L225 Difference]: With dead ends: 1977 [2022-11-20 11:57:18,945 INFO L226 Difference]: Without dead ends: 1351 [2022-11-20 11:57:18,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:18,947 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:18,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 92 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:18,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2022-11-20 11:57:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2022-11-20 11:57:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.236646884272997) internal successors, (1667), 1348 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2022-11-20 11:57:19,004 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2022-11-20 11:57:19,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:19,004 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2022-11-20 11:57:19,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2022-11-20 11:57:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:57:19,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:19,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:57:19,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2022-11-20 11:57:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774069693] [2022-11-20 11:57:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774069693] [2022-11-20 11:57:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774069693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:19,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:19,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014860451] [2022-11-20 11:57:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:19,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:19,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:19,033 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:19,138 INFO L93 Difference]: Finished difference Result 2183 states and 2660 transitions. [2022-11-20 11:57:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 11:57:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:19,147 INFO L225 Difference]: With dead ends: 2183 [2022-11-20 11:57:19,147 INFO L226 Difference]: Without dead ends: 2181 [2022-11-20 11:57:19,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:19,150 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:19,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 78 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2022-11-20 11:57:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2022-11-20 11:57:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.2022417153996101) internal successors, (2467), 2052 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2022-11-20 11:57:19,246 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2022-11-20 11:57:19,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:19,248 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2022-11-20 11:57:19,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2022-11-20 11:57:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 11:57:19,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:19,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:19,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:57:19,252 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:57:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2022-11-20 11:57:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:19,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929573615] [2022-11-20 11:57:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:19,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929573615] [2022-11-20 11:57:19,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929573615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:19,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:19,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461391942] [2022-11-20 11:57:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:57:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:57:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:19,288 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:19,410 INFO L93 Difference]: Finished difference Result 4549 states and 5347 transitions. [2022-11-20 11:57:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:57:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 11:57:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:19,411 INFO L225 Difference]: With dead ends: 4549 [2022-11-20 11:57:19,411 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:57:19,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:57:19,418 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:19,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:57:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:57:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:57:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:57:19,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-20 11:57:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:19,420 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:57:19,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:57:19,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:57:19,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:57:19,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:57:19,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:57:19,450 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,454 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,454 INFO L899 garLoopResultBuilder]: For program point L69-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,455 INFO L899 garLoopResultBuilder]: For program point L94(line 94) no Hoare annotation was computed. [2022-11-20 11:57:19,455 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:57:19,455 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:57:19,455 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,456 INFO L902 garLoopResultBuilder]: At program point L119(lines 7 123) the Hoare annotation is: true [2022-11-20 11:57:19,456 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 55) no Hoare annotation was computed. [2022-11-20 11:57:19,456 INFO L899 garLoopResultBuilder]: For program point L53-2(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,456 INFO L899 garLoopResultBuilder]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,456 INFO L899 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2022-11-20 11:57:19,457 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,457 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2022-11-20 11:57:19,457 INFO L902 garLoopResultBuilder]: At program point L122(lines 6 123) the Hoare annotation is: true [2022-11-20 11:57:19,457 INFO L899 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2022-11-20 11:57:19,457 INFO L899 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2022-11-20 11:57:19,458 INFO L895 garLoopResultBuilder]: At program point L114-1(lines 7 123) the Hoare annotation is: false [2022-11-20 11:57:19,459 INFO L899 garLoopResultBuilder]: For program point L73-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,460 INFO L899 garLoopResultBuilder]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,460 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,460 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:57:19,460 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2022-11-20 11:57:19,461 INFO L899 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2022-11-20 11:57:19,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:57:19,461 INFO L899 garLoopResultBuilder]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,462 INFO L899 garLoopResultBuilder]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2022-11-20 11:57:19,462 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2022-11-20 11:57:19,462 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2022-11-20 11:57:19,462 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2022-11-20 11:57:19,467 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:19,472 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:57:19,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:57:19 BoogieIcfgContainer [2022-11-20 11:57:19,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:57:19,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:57:19,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:57:19,485 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:57:19,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:16" (3/4) ... [2022-11-20 11:57:19,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:57:19,505 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 11:57:19,506 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:57:19,506 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:57:19,506 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:57:19,569 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:57:19,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:57:19,571 INFO L158 Benchmark]: Toolchain (without parser) took 4455.18ms. Allocated memory was 138.4MB in the beginning and 224.4MB in the end (delta: 86.0MB). Free memory was 70.8MB in the beginning and 113.0MB in the end (delta: -42.2MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,571 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory was 110.6MB in the beginning and 110.5MB in the end (delta: 95.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:57:19,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.66ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 70.5MB in the beginning and 152.3MB in the end (delta: -81.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.09ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 150.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:57:19,574 INFO L158 Benchmark]: Boogie Preprocessor took 26.56ms. Allocated memory is still 186.6MB. Free memory was 150.9MB in the beginning and 149.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,575 INFO L158 Benchmark]: RCFGBuilder took 544.34ms. Allocated memory is still 186.6MB. Free memory was 149.4MB in the beginning and 150.8MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,576 INFO L158 Benchmark]: TraceAbstraction took 3432.96ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 149.9MB in the beginning and 116.1MB in the end (delta: 33.7MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,576 INFO L158 Benchmark]: Witness Printer took 85.11ms. Allocated memory is still 224.4MB. Free memory was 116.1MB in the beginning and 113.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:57:19,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory was 110.6MB in the beginning and 110.5MB in the end (delta: 95.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.66ms. Allocated memory was 138.4MB in the beginning and 186.6MB in the end (delta: 48.2MB). Free memory was 70.5MB in the beginning and 152.3MB in the end (delta: -81.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.09ms. Allocated memory is still 186.6MB. Free memory was 152.3MB in the beginning and 150.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.56ms. Allocated memory is still 186.6MB. Free memory was 150.9MB in the beginning and 149.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.34ms. Allocated memory is still 186.6MB. Free memory was 149.4MB in the beginning and 150.8MB in the end (delta: -1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3432.96ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 149.9MB in the beginning and 116.1MB in the end (delta: 33.7MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. * Witness Printer took 85.11ms. Allocated memory is still 224.4MB. Free memory was 116.1MB in the beginning and 113.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 121]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 1857 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1128 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=18, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 137 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:57:19,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098e2ac8-dd2a-4c49-badd-ba55ce8bc5ee/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE