./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:24:49,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:49,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:49,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:49,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:49,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:49,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:49,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:49,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:49,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:49,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:49,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:49,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:49,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:49,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:49,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:49,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:49,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:49,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:49,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:49,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:49,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:49,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:49,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:49,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:49,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:49,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:49,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:49,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:49,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:49,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:49,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:49,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:49,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:49,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:49,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:49,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:49,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:49,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:49,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:49,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:49,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:24:49,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:49,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:49,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:49,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:49,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:49,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:49,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:49,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:49,187 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:49,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:49,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:49,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:49,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:49,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:49,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:49,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:49,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:49,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:49,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:49,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:49,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:49,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:49,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:49,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:49,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:49,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:49,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:49,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:49,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:49,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:49,193 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:49,193 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:49,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:49,194 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_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f0467b9e67537a0ac20514e4a1726e96ded28a47950e156d374c001df2ce1c [2022-11-02 20:24:49,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:49,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:49,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:49,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:49,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:49,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2022-11-02 20:24:49,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/data/775d85d43/eb47cedc416a41d485d8d4dae322c0d5/FLAG9bf5d6e1e [2022-11-02 20:24:50,778 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:50,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2022-11-02 20:24:50,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/data/775d85d43/eb47cedc416a41d485d8d4dae322c0d5/FLAG9bf5d6e1e [2022-11-02 20:24:51,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/data/775d85d43/eb47cedc416a41d485d8d4dae322c0d5 [2022-11-02 20:24:51,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:51,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:51,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:51,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:51,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:51,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:51" (1/1) ... [2022-11-02 20:24:51,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bc3547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:51, skipping insertion in model container [2022-11-02 20:24:51,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:51" (1/1) ... [2022-11-02 20:24:51,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:51,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:51,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2022-11-02 20:24:51,941 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2022-11-02 20:24:53,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:53,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:53,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[8653,8666] [2022-11-02 20:24:53,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c[16401,16414] [2022-11-02 20:24:54,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:54,191 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:54,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54 WrapperNode [2022-11-02 20:24:54,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:54,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:54,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:54,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:54,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,808 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5032 [2022-11-02 20:24:54,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:54,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:54,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:54,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:54,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:54,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:55,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:55,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:55,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:55,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (1/1) ... [2022-11-02 20:24:55,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:55,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:55,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:24:55,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:24:55,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:55,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:55,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:55,883 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:25:03,406 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:25:03,425 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:25:03,425 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:25:03,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:03 BoogieIcfgContainer [2022-11-02 20:25:03,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:25:03,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:25:03,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:25:03,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:25:03,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:51" (1/3) ... [2022-11-02 20:25:03,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bfb358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:03, skipping insertion in model container [2022-11-02 20:25:03,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:54" (2/3) ... [2022-11-02 20:25:03,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bfb358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:03, skipping insertion in model container [2022-11-02 20:25:03,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:03" (3/3) ... [2022-11-02 20:25:03,446 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label09.c [2022-11-02 20:25:03,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:25:03,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:25:03,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:25:03,645 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;@6710f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:25:03,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:25:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 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) [2022-11-02 20:25:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:25:03,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:03,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:03,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:03,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2022-11-02 20:25:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:03,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955093914] [2022-11-02 20:25:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:04,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955093914] [2022-11-02 20:25:04,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955093914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:04,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:04,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:25:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802151269] [2022-11-02 20:25:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:25:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:04,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:25:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:25:04,215 INFO L87 Difference]: Start difference. First operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2022-11-02 20:25:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:04,390 INFO L93 Difference]: Finished difference Result 1757 states and 3332 transitions. [2022-11-02 20:25:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:25:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2022-11-02 20:25:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:04,432 INFO L225 Difference]: With dead ends: 1757 [2022-11-02 20:25:04,433 INFO L226 Difference]: Without dead ends: 827 [2022-11-02 20:25:04,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:25:04,452 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:04,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-02 20:25:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-11-02 20:25:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.8909090909090909) internal successors, (1560), 826 states have internal predecessors, (1560), 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) [2022-11-02 20:25:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1560 transitions. [2022-11-02 20:25:04,571 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1560 transitions. Word has length 30 [2022-11-02 20:25:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1560 transitions. [2022-11-02 20:25:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2022-11-02 20:25:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1560 transitions. [2022-11-02 20:25:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:25:04,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:04,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:25:04,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2022-11-02 20:25:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:04,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979704263] [2022-11-02 20:25:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:04,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979704263] [2022-11-02 20:25:04,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979704263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:04,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:04,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131444836] [2022-11-02 20:25:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:04,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:04,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:04,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:04,915 INFO L87 Difference]: Start difference. First operand 827 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-02 20:25:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,189 INFO L93 Difference]: Finished difference Result 919 states and 1702 transitions. [2022-11-02 20:25:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 30 [2022-11-02 20:25:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,211 INFO L225 Difference]: With dead ends: 919 [2022-11-02 20:25:05,211 INFO L226 Difference]: Without dead ends: 871 [2022-11-02 20:25:05,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:05,214 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 71 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:05,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 6196 Invalid, 43 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-02 20:25:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 827. [2022-11-02 20:25:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.863030303030303) internal successors, (1537), 826 states have internal predecessors, (1537), 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) [2022-11-02 20:25:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1537 transitions. [2022-11-02 20:25:05,284 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1537 transitions. Word has length 30 [2022-11-02 20:25:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,285 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1537 transitions. [2022-11-02 20:25:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-02 20:25:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1537 transitions. [2022-11-02 20:25:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:25:05,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:25:05,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2022-11-02 20:25:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640083028] [2022-11-02 20:25:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:05,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640083028] [2022-11-02 20:25:05,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640083028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:05,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:05,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90250790] [2022-11-02 20:25:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:05,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:05,547 INFO L87 Difference]: Start difference. First operand 827 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,619 INFO L93 Difference]: Finished difference Result 909 states and 1665 transitions. [2022-11-02 20:25:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-11-02 20:25:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,628 INFO L225 Difference]: With dead ends: 909 [2022-11-02 20:25:05,628 INFO L226 Difference]: Without dead ends: 865 [2022-11-02 20:25:05,635 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 [2022-11-02 20:25:05,641 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 1498 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:05,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1659 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2022-11-02 20:25:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 863. [2022-11-02 20:25:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8513356562137049) internal successors, (1594), 862 states have internal predecessors, (1594), 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) [2022-11-02 20:25:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1594 transitions. [2022-11-02 20:25:05,732 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1594 transitions. Word has length 52 [2022-11-02 20:25:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,733 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1594 transitions. [2022-11-02 20:25:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1594 transitions. [2022-11-02 20:25:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:25:05,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:05,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:25:05,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2022-11-02 20:25:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:05,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045706627] [2022-11-02 20:25:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:05,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:05,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045706627] [2022-11-02 20:25:05,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045706627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:05,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:05,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723900853] [2022-11-02 20:25:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:05,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:05,980 INFO L87 Difference]: Start difference. First operand 863 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:06,051 INFO L93 Difference]: Finished difference Result 1011 states and 1826 transitions. [2022-11-02 20:25:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:06,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-11-02 20:25:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:06,062 INFO L225 Difference]: With dead ends: 1011 [2022-11-02 20:25:06,063 INFO L226 Difference]: Without dead ends: 931 [2022-11-02 20:25:06,064 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 [2022-11-02 20:25:06,078 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1658 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-02 20:25:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2022-11-02 20:25:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.8306364617044228) internal successors, (1697), 928 states have internal predecessors, (1697), 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) [2022-11-02 20:25:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1697 transitions. [2022-11-02 20:25:06,137 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1697 transitions. Word has length 52 [2022-11-02 20:25:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:06,140 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1697 transitions. [2022-11-02 20:25:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1697 transitions. [2022-11-02 20:25:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:25:06,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:06,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:25:06,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2022-11-02 20:25:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:06,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804799056] [2022-11-02 20:25:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:06,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804799056] [2022-11-02 20:25:06,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804799056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:06,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:06,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:06,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853842435] [2022-11-02 20:25:06,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:06,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:06,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:06,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:06,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:06,334 INFO L87 Difference]: Start difference. First operand 929 states and 1697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:06,426 INFO L93 Difference]: Finished difference Result 1197 states and 2115 transitions. [2022-11-02 20:25:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-11-02 20:25:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:06,435 INFO L225 Difference]: With dead ends: 1197 [2022-11-02 20:25:06,435 INFO L226 Difference]: Without dead ends: 1051 [2022-11-02 20:25:06,436 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 [2022-11-02 20:25:06,437 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 1490 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:06,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-11-02 20:25:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1049. [2022-11-02 20:25:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1047 states have (on average 1.7965616045845272) internal successors, (1881), 1048 states have internal predecessors, (1881), 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) [2022-11-02 20:25:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1881 transitions. [2022-11-02 20:25:06,502 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1881 transitions. Word has length 52 [2022-11-02 20:25:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:06,503 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1881 transitions. [2022-11-02 20:25:06,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1881 transitions. [2022-11-02 20:25:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:25:06,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:06,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:25:06,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2022-11-02 20:25:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:06,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052689457] [2022-11-02 20:25:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:06,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052689457] [2022-11-02 20:25:06,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052689457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:06,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:06,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:06,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138004619] [2022-11-02 20:25:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:06,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:06,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:06,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:06,655 INFO L87 Difference]: Start difference. First operand 1049 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:06,762 INFO L93 Difference]: Finished difference Result 1533 states and 2627 transitions. [2022-11-02 20:25:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2022-11-02 20:25:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:06,773 INFO L225 Difference]: With dead ends: 1533 [2022-11-02 20:25:06,774 INFO L226 Difference]: Without dead ends: 1267 [2022-11-02 20:25:06,775 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 [2022-11-02 20:25:06,782 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1486 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:06,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-11-02 20:25:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2022-11-02 20:25:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1263 states have (on average 1.7458432304038005) internal successors, (2205), 1264 states have internal predecessors, (2205), 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) [2022-11-02 20:25:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2205 transitions. [2022-11-02 20:25:06,885 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2205 transitions. Word has length 52 [2022-11-02 20:25:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:06,888 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 2205 transitions. [2022-11-02 20:25:06,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-02 20:25:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2205 transitions. [2022-11-02 20:25:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:25:06,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:06,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:06,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:25:06,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:06,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1924545907, now seen corresponding path program 1 times [2022-11-02 20:25:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173306035] [2022-11-02 20:25:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:07,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:07,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173306035] [2022-11-02 20:25:07,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173306035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:07,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:07,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:07,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014677121] [2022-11-02 20:25:07,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:07,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:07,135 INFO L87 Difference]: Start difference. First operand 1265 states and 2205 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-02 20:25:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:07,873 INFO L93 Difference]: Finished difference Result 5121 states and 8101 transitions. [2022-11-02 20:25:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:25:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2022-11-02 20:25:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:07,900 INFO L225 Difference]: With dead ends: 5121 [2022-11-02 20:25:07,901 INFO L226 Difference]: Without dead ends: 4639 [2022-11-02 20:25:07,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:07,905 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 6521 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6521 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:07,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6521 Valid, 2068 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2022-11-02 20:25:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 1745. [2022-11-02 20:25:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1743 states have (on average 1.6689615605278256) internal successors, (2909), 1744 states have internal predecessors, (2909), 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) [2022-11-02 20:25:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2909 transitions. [2022-11-02 20:25:08,124 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2909 transitions. Word has length 52 [2022-11-02 20:25:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:08,125 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2909 transitions. [2022-11-02 20:25:08,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-02 20:25:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2909 transitions. [2022-11-02 20:25:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:25:08,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:08,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:25:08,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1236981091, now seen corresponding path program 1 times [2022-11-02 20:25:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298735680] [2022-11-02 20:25:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:08,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298735680] [2022-11-02 20:25:08,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298735680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:08,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:08,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237908238] [2022-11-02 20:25:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:08,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:08,213 INFO L87 Difference]: Start difference. First operand 1745 states and 2909 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2022-11-02 20:25:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:08,473 INFO L93 Difference]: Finished difference Result 3151 states and 5009 transitions. [2022-11-02 20:25:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:08,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) Word has length 54 [2022-11-02 20:25:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:08,483 INFO L225 Difference]: With dead ends: 3151 [2022-11-02 20:25:08,484 INFO L226 Difference]: Without dead ends: 2189 [2022-11-02 20:25:08,486 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 [2022-11-02 20:25:08,487 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1478 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:08,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1623 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-02 20:25:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2022-11-02 20:25:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.6215102974828375) internal successors, (3543), 2186 states have internal predecessors, (3543), 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) [2022-11-02 20:25:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3543 transitions. [2022-11-02 20:25:08,683 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3543 transitions. Word has length 54 [2022-11-02 20:25:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:08,684 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3543 transitions. [2022-11-02 20:25:08,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2022-11-02 20:25:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3543 transitions. [2022-11-02 20:25:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:25:08,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:08,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:25:08,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1303474603, now seen corresponding path program 1 times [2022-11-02 20:25:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:08,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883431094] [2022-11-02 20:25:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:09,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:09,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883431094] [2022-11-02 20:25:09,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883431094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:09,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389527830] [2022-11-02 20:25:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:09,054 INFO L87 Difference]: Start difference. First operand 2187 states and 3543 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2022-11-02 20:25:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:09,474 INFO L93 Difference]: Finished difference Result 3591 states and 5617 transitions. [2022-11-02 20:25:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) Word has length 54 [2022-11-02 20:25:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:09,485 INFO L225 Difference]: With dead ends: 3591 [2022-11-02 20:25:09,485 INFO L226 Difference]: Without dead ends: 2189 [2022-11-02 20:25:09,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:09,489 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 6036 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6036 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:09,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6036 Valid, 1726 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-02 20:25:09,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2022-11-02 20:25:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.6105263157894736) internal successors, (3519), 2186 states have internal predecessors, (3519), 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) [2022-11-02 20:25:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3519 transitions. [2022-11-02 20:25:09,691 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3519 transitions. Word has length 54 [2022-11-02 20:25:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:09,692 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3519 transitions. [2022-11-02 20:25:09,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2022-11-02 20:25:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3519 transitions. [2022-11-02 20:25:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:25:09,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:09,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:25:09,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1338283904, now seen corresponding path program 1 times [2022-11-02 20:25:09,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:09,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094789023] [2022-11-02 20:25:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:09,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094789023] [2022-11-02 20:25:09,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094789023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569130457] [2022-11-02 20:25:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:09,862 INFO L87 Difference]: Start difference. First operand 2187 states and 3519 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:10,301 INFO L93 Difference]: Finished difference Result 3589 states and 5568 transitions. [2022-11-02 20:25:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-11-02 20:25:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:10,315 INFO L225 Difference]: With dead ends: 3589 [2022-11-02 20:25:10,316 INFO L226 Difference]: Without dead ends: 2187 [2022-11-02 20:25:10,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:10,320 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 4595 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:10,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4595 Valid, 2977 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-11-02 20:25:10,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-11-02 20:25:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.59954233409611) internal successors, (3495), 2186 states have internal predecessors, (3495), 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) [2022-11-02 20:25:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3495 transitions. [2022-11-02 20:25:10,571 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3495 transitions. Word has length 55 [2022-11-02 20:25:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:10,572 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3495 transitions. [2022-11-02 20:25:10,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3495 transitions. [2022-11-02 20:25:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:25:10,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:10,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:10,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:25:10,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:10,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 637219326, now seen corresponding path program 1 times [2022-11-02 20:25:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092592784] [2022-11-02 20:25:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:10,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092592784] [2022-11-02 20:25:10,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092592784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:10,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:10,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249017856] [2022-11-02 20:25:10,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:10,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:10,734 INFO L87 Difference]: Start difference. First operand 2187 states and 3495 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:11,169 INFO L93 Difference]: Finished difference Result 3589 states and 5520 transitions. [2022-11-02 20:25:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:11,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-11-02 20:25:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:11,182 INFO L225 Difference]: With dead ends: 3589 [2022-11-02 20:25:11,182 INFO L226 Difference]: Without dead ends: 2187 [2022-11-02 20:25:11,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:11,187 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4627 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:11,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 2982 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2022-11-02 20:25:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2022-11-02 20:25:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.588558352402746) internal successors, (3471), 2186 states have internal predecessors, (3471), 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) [2022-11-02 20:25:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3471 transitions. [2022-11-02 20:25:11,455 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3471 transitions. Word has length 55 [2022-11-02 20:25:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:11,455 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3471 transitions. [2022-11-02 20:25:11,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3471 transitions. [2022-11-02 20:25:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-02 20:25:11,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:11,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:11,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:25:11,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:11,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2022-11-02 20:25:11,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:11,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161134772] [2022-11-02 20:25:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:11,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:11,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161134772] [2022-11-02 20:25:11,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161134772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:11,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:11,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:11,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698001684] [2022-11-02 20:25:11,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:11,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:11,702 INFO L87 Difference]: Start difference. First operand 2187 states and 3471 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:12,354 INFO L93 Difference]: Finished difference Result 3418 states and 5169 transitions. [2022-11-02 20:25:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:12,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2022-11-02 20:25:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:12,437 INFO L225 Difference]: With dead ends: 3418 [2022-11-02 20:25:12,437 INFO L226 Difference]: Without dead ends: 3416 [2022-11-02 20:25:12,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:12,441 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 172 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:12,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 6153 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2022-11-02 20:25:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 2283. [2022-11-02 20:25:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2281 states have (on average 1.5602805786935554) internal successors, (3559), 2282 states have internal predecessors, (3559), 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) [2022-11-02 20:25:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3559 transitions. [2022-11-02 20:25:12,782 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3559 transitions. Word has length 55 [2022-11-02 20:25:12,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:12,783 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3559 transitions. [2022-11-02 20:25:12,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2022-11-02 20:25:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3559 transitions. [2022-11-02 20:25:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:25:12,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:12,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:25:12,794 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1457269204, now seen corresponding path program 1 times [2022-11-02 20:25:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:12,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380743749] [2022-11-02 20:25:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:13,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380743749] [2022-11-02 20:25:13,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380743749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:13,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:13,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511790739] [2022-11-02 20:25:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:13,028 INFO L87 Difference]: Start difference. First operand 2283 states and 3559 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-02 20:25:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:25,292 INFO L93 Difference]: Finished difference Result 4538 states and 7868 transitions. [2022-11-02 20:25:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:25:25,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-02 20:25:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:25,312 INFO L225 Difference]: With dead ends: 4538 [2022-11-02 20:25:25,313 INFO L226 Difference]: Without dead ends: 3785 [2022-11-02 20:25:25,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:25,317 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 2372 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 6404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1250 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:25,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 807 Invalid, 6404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1250 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-02 20:25:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-11-02 20:25:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3785. [2022-11-02 20:25:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3783 states have (on average 1.4631245043616177) internal successors, (5535), 3784 states have internal predecessors, (5535), 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) [2022-11-02 20:25:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5535 transitions. [2022-11-02 20:25:25,767 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5535 transitions. Word has length 67 [2022-11-02 20:25:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 3785 states and 5535 transitions. [2022-11-02 20:25:25,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-02 20:25:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5535 transitions. [2022-11-02 20:25:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:25:25,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:25,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:25:25,773 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash -484645446, now seen corresponding path program 1 times [2022-11-02 20:25:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:25,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632741] [2022-11-02 20:25:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:25:26,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:26,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632741] [2022-11-02 20:25:26,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:26,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:26,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537318733] [2022-11-02 20:25:26,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:26,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:26,009 INFO L87 Difference]: Start difference. First operand 3785 states and 5535 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2022-11-02 20:25:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:27,409 INFO L93 Difference]: Finished difference Result 10091 states and 14304 transitions. [2022-11-02 20:25:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 79 [2022-11-02 20:25:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:27,439 INFO L225 Difference]: With dead ends: 10091 [2022-11-02 20:25:27,439 INFO L226 Difference]: Without dead ends: 8593 [2022-11-02 20:25:27,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:27,446 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 4749 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4749 Valid, 3340 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2022-11-02 20:25:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 5281. [2022-11-02 20:25:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5279 states have (on average 1.4394771737071415) internal successors, (7599), 5280 states have internal predecessors, (7599), 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) [2022-11-02 20:25:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7599 transitions. [2022-11-02 20:25:28,142 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7599 transitions. Word has length 79 [2022-11-02 20:25:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 5281 states and 7599 transitions. [2022-11-02 20:25:28,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2022-11-02 20:25:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7599 transitions. [2022-11-02 20:25:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:25:28,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:28,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:28,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:25:28,146 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2041539034, now seen corresponding path program 1 times [2022-11-02 20:25:28,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:28,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423808699] [2022-11-02 20:25:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:25:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:28,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423808699] [2022-11-02 20:25:28,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423808699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:28,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:28,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126324873] [2022-11-02 20:25:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:28,311 INFO L87 Difference]: Start difference. First operand 5281 states and 7599 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-11-02 20:25:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:29,665 INFO L93 Difference]: Finished difference Result 11587 states and 16368 transitions. [2022-11-02 20:25:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:29,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 79 [2022-11-02 20:25:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:29,689 INFO L225 Difference]: With dead ends: 11587 [2022-11-02 20:25:29,690 INFO L226 Difference]: Without dead ends: 10089 [2022-11-02 20:25:29,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:29,695 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 4706 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4706 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:29,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4706 Valid, 3379 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2022-11-02 20:25:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 7529. [2022-11-02 20:25:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 7527 states have (on average 1.4182277135645012) internal successors, (10675), 7528 states have internal predecessors, (10675), 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) [2022-11-02 20:25:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 10675 transitions. [2022-11-02 20:25:30,431 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 10675 transitions. Word has length 79 [2022-11-02 20:25:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:30,432 INFO L495 AbstractCegarLoop]: Abstraction has 7529 states and 10675 transitions. [2022-11-02 20:25:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2022-11-02 20:25:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 10675 transitions. [2022-11-02 20:25:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:25:30,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:30,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:25:30,436 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1121788422, now seen corresponding path program 1 times [2022-11-02 20:25:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:30,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174071244] [2022-11-02 20:25:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:25:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174071244] [2022-11-02 20:25:30,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174071244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:30,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:30,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427469381] [2022-11-02 20:25:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:30,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:30,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:30,638 INFO L87 Difference]: Start difference. First operand 7529 states and 10675 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-11-02 20:25:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:32,077 INFO L93 Difference]: Finished difference Result 13083 states and 18432 transitions. [2022-11-02 20:25:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 79 [2022-11-02 20:25:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:32,106 INFO L225 Difference]: With dead ends: 13083 [2022-11-02 20:25:32,106 INFO L226 Difference]: Without dead ends: 11585 [2022-11-02 20:25:32,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:32,114 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 4740 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:32,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4740 Valid, 3382 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11585 states. [2022-11-02 20:25:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11585 to 9025. [2022-11-02 20:25:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9025 states, 9023 states have (on average 1.4118364180427796) internal successors, (12739), 9024 states have internal predecessors, (12739), 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) [2022-11-02 20:25:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9025 states to 9025 states and 12739 transitions. [2022-11-02 20:25:33,103 INFO L78 Accepts]: Start accepts. Automaton has 9025 states and 12739 transitions. Word has length 79 [2022-11-02 20:25:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:33,103 INFO L495 AbstractCegarLoop]: Abstraction has 9025 states and 12739 transitions. [2022-11-02 20:25:33,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-11-02 20:25:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9025 states and 12739 transitions. [2022-11-02 20:25:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:25:33,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:33,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:33,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:25:33,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1937719834, now seen corresponding path program 1 times [2022-11-02 20:25:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:33,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215186637] [2022-11-02 20:25:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:25:33,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:33,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215186637] [2022-11-02 20:25:33,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215186637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:33,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:33,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494074993] [2022-11-02 20:25:33,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:33,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:33,266 INFO L87 Difference]: Start difference. First operand 9025 states and 12739 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-11-02 20:25:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:35,067 INFO L93 Difference]: Finished difference Result 13699 states and 19296 transitions. [2022-11-02 20:25:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:25:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 79 [2022-11-02 20:25:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:35,099 INFO L225 Difference]: With dead ends: 13699 [2022-11-02 20:25:35,099 INFO L226 Difference]: Without dead ends: 12641 [2022-11-02 20:25:35,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:35,106 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 4739 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:35,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 3335 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2022-11-02 20:25:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 10081. [2022-11-02 20:25:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 10079 states have (on average 1.4099613056850877) internal successors, (14211), 10080 states have internal predecessors, (14211), 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) [2022-11-02 20:25:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 14211 transitions. [2022-11-02 20:25:36,247 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 14211 transitions. Word has length 79 [2022-11-02 20:25:36,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:36,248 INFO L495 AbstractCegarLoop]: Abstraction has 10081 states and 14211 transitions. [2022-11-02 20:25:36,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2022-11-02 20:25:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 14211 transitions. [2022-11-02 20:25:36,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:36,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:36,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:36,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:25:36,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -596667294, now seen corresponding path program 1 times [2022-11-02 20:25:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:36,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313449439] [2022-11-02 20:25:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:36,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:25:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:36,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313449439] [2022-11-02 20:25:36,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313449439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:25:36,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578275760] [2022-11-02 20:25:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:25:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:36,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:25:36,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:25:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:36,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:25:36,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:25:36,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:25:37,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578275760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:37,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:25:37,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-11-02 20:25:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261993510] [2022-11-02 20:25:37,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:37,385 INFO L87 Difference]: Start difference. First operand 10081 states and 14211 transitions. Second operand has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 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) [2022-11-02 20:25:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:41,309 INFO L93 Difference]: Finished difference Result 30702 states and 43069 transitions. [2022-11-02 20:25:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:25:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 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 80 [2022-11-02 20:25:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:41,360 INFO L225 Difference]: With dead ends: 30702 [2022-11-02 20:25:41,360 INFO L226 Difference]: Without dead ends: 24892 [2022-11-02 20:25:41,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:25:41,373 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6357 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6357 SdHoareTripleChecker+Valid, 6410 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:41,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6357 Valid, 6410 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2022-11-02 20:25:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 24721. [2022-11-02 20:25:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24721 states, 24719 states have (on average 1.3734778915004653) internal successors, (33951), 24720 states have internal predecessors, (33951), 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) [2022-11-02 20:25:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24721 states to 24721 states and 33951 transitions. [2022-11-02 20:25:44,905 INFO L78 Accepts]: Start accepts. Automaton has 24721 states and 33951 transitions. Word has length 80 [2022-11-02 20:25:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:44,906 INFO L495 AbstractCegarLoop]: Abstraction has 24721 states and 33951 transitions. [2022-11-02 20:25:44,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.9) internal successors, (219), 10 states have internal predecessors, (219), 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) [2022-11-02 20:25:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 24721 states and 33951 transitions. [2022-11-02 20:25:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:25:44,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:44,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:44,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:25:45,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:25:45,122 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1057956914, now seen corresponding path program 1 times [2022-11-02 20:25:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407070] [2022-11-02 20:25:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:45,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:45,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407070] [2022-11-02 20:25:45,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:25:45,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031974404] [2022-11-02 20:25:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:25:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:45,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:25:45,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7202d2c3-9fc7-4ac5-bc61-154a4a058cb1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:25:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:46,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:25:46,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:47,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:47,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031974404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:47,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:25:47,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-11-02 20:25:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793159688] [2022-11-02 20:25:47,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:47,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:25:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:25:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:25:47,972 INFO L87 Difference]: Start difference. First operand 24721 states and 33951 transitions. Second operand has 30 states, 30 states have (on average 6.966666666666667) internal successors, (209), 29 states have internal predecessors, (209), 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)