./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a --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 8b0406e617bfcdc7e6543e19b38e9be8eeb37f2896cb91bcfe6035d747328da7 --- 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-b5237d8 [2022-11-21 16:08:06,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:08:06,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:08:06,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:08:06,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:08:06,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:08:06,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:08:06,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:08:06,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:08:06,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:08:06,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:08:06,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:08:06,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:08:06,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:08:06,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:08:06,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:08:06,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:08:06,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:08:06,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:08:06,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:08:06,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:08:06,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:08:06,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:08:06,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:08:06,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:08:06,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:08:06,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:08:06,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:08:06,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:08:06,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:08:06,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:08:06,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:08:06,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:08:06,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:08:06,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:08:06,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:08:06,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:08:06,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:08:06,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:08:06,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:08:06,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:08:06,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:08:06,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:08:06,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:08:06,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:08:06,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:08:06,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:08:06,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:08:06,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:08:06,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:08:06,215 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:08:06,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:08:06,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:08:06,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:08:06,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:08:06,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:08:06,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:08:06,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:08:06,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:08:06,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:08:06,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:08:06,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:08:06,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:08:06,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:08:06,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:08:06,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:08:06,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:06,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:08:06,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:08:06,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:08:06,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:08:06,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:08:06,221 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:08:06,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:08:06,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:08:06,221 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_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b0406e617bfcdc7e6543e19b38e9be8eeb37f2896cb91bcfe6035d747328da7 [2022-11-21 16:08:06,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:08:06,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:08:06,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:08:06,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:08:06,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:08:06,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-21 16:08:10,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:08:10,459 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:08:10,460 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-21 16:08:10,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/data/0825213a4/9689f5bb95094363ae971c9662453e3f/FLAG540ebbf4f [2022-11-21 16:08:10,492 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/data/0825213a4/9689f5bb95094363ae971c9662453e3f [2022-11-21 16:08:10,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:08:10,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:08:10,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:10,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:08:10,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:08:10,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:10,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b7cb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10, skipping insertion in model container [2022-11-21 16:08:10,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:10,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:08:10,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:08:10,825 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2022-11-21 16:08:10,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:10,846 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:08:10,920 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2022-11-21 16:08:10,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:10,941 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:08:10,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10 WrapperNode [2022-11-21 16:08:10,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:10,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:10,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:08:10,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:08:10,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:10,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,013 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 405 [2022-11-21 16:08:11,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:11,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:08:11,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:08:11,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:08:11,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:08:11,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:08:11,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:08:11,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:08:11,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (1/1) ... [2022-11-21 16:08:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:11,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:11,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:08:11,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1939c131-6216-407f-84f6-c83559ccbbd6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:08:11,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:08:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:08:11,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:08:11,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:08:11,398 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:08:11,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:08:12,349 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:08:12,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:08:12,361 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:08:12,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:12 BoogieIcfgContainer [2022-11-21 16:08:12,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:08:12,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:08:12,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:08:12,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:08:12,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:08:10" (1/3) ... [2022-11-21 16:08:12,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b07868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:12, skipping insertion in model container [2022-11-21 16:08:12,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:10" (2/3) ... [2022-11-21 16:08:12,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b07868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:12, skipping insertion in model container [2022-11-21 16:08:12,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:12" (3/3) ... [2022-11-21 16:08:12,377 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2022-11-21 16:08:12,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:08:12,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:08:12,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:08:12,480 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;@7e40bcc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:08:12,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:08:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 111 states have (on average 1.7747747747747749) internal successors, (197), 112 states have internal predecessors, (197), 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) [2022-11-21 16:08:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 16:08:12,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:12,501 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] [2022-11-21 16:08:12,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:12,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:12,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1840534402, now seen corresponding path program 1 times [2022-11-21 16:08:12,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:12,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316478660] [2022-11-21 16:08:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:12,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:12,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316478660] [2022-11-21 16:08:12,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316478660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:12,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:12,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:08:12,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507323080] [2022-11-21 16:08:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:13,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:08:13,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:08:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:08:13,073 INFO L87 Difference]: Start difference. First operand has 113 states, 111 states have (on average 1.7747747747747749) internal successors, (197), 112 states have internal predecessors, (197), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-11-21 16:08:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:13,141 INFO L93 Difference]: Finished difference Result 176 states and 304 transitions. [2022-11-21 16:08:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:08:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-11-21 16:08:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:13,160 INFO L225 Difference]: With dead ends: 176 [2022-11-21 16:08:13,161 INFO L226 Difference]: Without dead ends: 109 [2022-11-21 16:08:13,165 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 [2022-11-21 16:08:13,169 INFO L413 NwaCegarLoop]: 194 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, 194 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 [2022-11-21 16:08:13,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-21 16:08:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-21 16:08:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.7592592592592593) internal successors, (190), 108 states have internal predecessors, (190), 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) [2022-11-21 16:08:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 190 transitions. [2022-11-21 16:08:13,239 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 190 transitions. Word has length 37 [2022-11-21 16:08:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 190 transitions. [2022-11-21 16:08:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2022-11-21 16:08:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 190 transitions. [2022-11-21 16:08:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-21 16:08:13,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:13,243 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] [2022-11-21 16:08:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:08:13,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1022885952, now seen corresponding path program 1 times [2022-11-21 16:08:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731577128] [2022-11-21 16:08:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:13,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731577128] [2022-11-21 16:08:13,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731577128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:13,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:13,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532131197] [2022-11-21 16:08:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:13,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:13,493 INFO L87 Difference]: Start difference. First operand 109 states and 190 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:08:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:13,615 INFO L93 Difference]: Finished difference Result 229 states and 394 transitions. [2022-11-21 16:08:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:08:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-11-21 16:08:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:13,618 INFO L225 Difference]: With dead ends: 229 [2022-11-21 16:08:13,619 INFO L226 Difference]: Without dead ends: 167 [2022-11-21 16:08:13,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:08:13,621 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 102 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:13,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 718 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-21 16:08:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 109. [2022-11-21 16:08:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.5648148148148149) internal successors, (169), 108 states have internal predecessors, (169), 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) [2022-11-21 16:08:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 169 transitions. [2022-11-21 16:08:13,635 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 169 transitions. Word has length 37 [2022-11-21 16:08:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 169 transitions. [2022-11-21 16:08:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-11-21 16:08:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 169 transitions. [2022-11-21 16:08:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 16:08:13,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:13,638 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] [2022-11-21 16:08:13,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:08:13,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1243965468, now seen corresponding path program 1 times [2022-11-21 16:08:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:13,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438553497] [2022-11-21 16:08:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:13,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:13,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438553497] [2022-11-21 16:08:13,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438553497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:13,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:13,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:13,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765464841] [2022-11-21 16:08:13,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:13,852 INFO L87 Difference]: Start difference. First operand 109 states and 169 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-21 16:08:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:13,912 INFO L93 Difference]: Finished difference Result 216 states and 352 transitions. [2022-11-21 16:08:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-21 16:08:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:13,915 INFO L225 Difference]: With dead ends: 216 [2022-11-21 16:08:13,915 INFO L226 Difference]: Without dead ends: 158 [2022-11-21 16:08:13,916 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 [2022-11-21 16:08:13,918 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 75 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:13,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 367 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-21 16:08:13,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2022-11-21 16:08:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.5870967741935484) internal successors, (246), 155 states have internal predecessors, (246), 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) [2022-11-21 16:08:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 246 transitions. [2022-11-21 16:08:13,936 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 246 transitions. Word has length 57 [2022-11-21 16:08:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:13,936 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 246 transitions. [2022-11-21 16:08:13,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-21 16:08:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 246 transitions. [2022-11-21 16:08:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 16:08:13,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:13,939 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] [2022-11-21 16:08:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:08:13,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1313394039, now seen corresponding path program 1 times [2022-11-21 16:08:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:13,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542968156] [2022-11-21 16:08:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:14,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542968156] [2022-11-21 16:08:14,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542968156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057583624] [2022-11-21 16:08:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:14,140 INFO L87 Difference]: Start difference. First operand 156 states and 246 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-21 16:08:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:14,201 INFO L93 Difference]: Finished difference Result 263 states and 429 transitions. [2022-11-21 16:08:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-11-21 16:08:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:14,214 INFO L225 Difference]: With dead ends: 263 [2022-11-21 16:08:14,214 INFO L226 Difference]: Without dead ends: 205 [2022-11-21 16:08:14,215 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 [2022-11-21 16:08:14,217 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 84 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 387 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 [2022-11-21 16:08:14,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-21 16:08:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2022-11-21 16:08:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.613861386138614) internal successors, (326), 202 states have internal predecessors, (326), 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) [2022-11-21 16:08:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 326 transitions. [2022-11-21 16:08:14,250 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 326 transitions. Word has length 59 [2022-11-21 16:08:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:14,251 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 326 transitions. [2022-11-21 16:08:14,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-21 16:08:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 326 transitions. [2022-11-21 16:08:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-21 16:08:14,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:14,253 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] [2022-11-21 16:08:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:08:14,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -597631474, now seen corresponding path program 1 times [2022-11-21 16:08:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:14,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879801490] [2022-11-21 16:08:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:14,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:14,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879801490] [2022-11-21 16:08:14,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879801490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:14,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:14,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:14,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659662560] [2022-11-21 16:08:14,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:14,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:14,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:14,483 INFO L87 Difference]: Start difference. First operand 203 states and 326 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-21 16:08:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:14,530 INFO L93 Difference]: Finished difference Result 482 states and 797 transitions. [2022-11-21 16:08:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:14,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2022-11-21 16:08:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:14,539 INFO L225 Difference]: With dead ends: 482 [2022-11-21 16:08:14,540 INFO L226 Difference]: Without dead ends: 332 [2022-11-21 16:08:14,541 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 [2022-11-21 16:08:14,542 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:14,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-21 16:08:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2022-11-21 16:08:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.635258358662614) internal successors, (538), 329 states have internal predecessors, (538), 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) [2022-11-21 16:08:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 538 transitions. [2022-11-21 16:08:14,590 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 538 transitions. Word has length 59 [2022-11-21 16:08:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:14,591 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 538 transitions. [2022-11-21 16:08:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-21 16:08:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 538 transitions. [2022-11-21 16:08:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-21 16:08:14,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:14,594 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] [2022-11-21 16:08:14,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:08:14,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 908572083, now seen corresponding path program 1 times [2022-11-21 16:08:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868514247] [2022-11-21 16:08:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868514247] [2022-11-21 16:08:14,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868514247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:14,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:14,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153533537] [2022-11-21 16:08:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:14,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:14,721 INFO L87 Difference]: Start difference. First operand 330 states and 538 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-21 16:08:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:14,778 INFO L93 Difference]: Finished difference Result 603 states and 997 transitions. [2022-11-21 16:08:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:14,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-11-21 16:08:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:14,786 INFO L225 Difference]: With dead ends: 603 [2022-11-21 16:08:14,787 INFO L226 Difference]: Without dead ends: 453 [2022-11-21 16:08:14,791 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 [2022-11-21 16:08:14,800 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 78 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 379 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 [2022-11-21 16:08:14,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 379 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-21 16:08:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2022-11-21 16:08:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6377777777777778) internal successors, (737), 450 states have internal predecessors, (737), 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) [2022-11-21 16:08:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 737 transitions. [2022-11-21 16:08:14,861 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 737 transitions. Word has length 61 [2022-11-21 16:08:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:14,861 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 737 transitions. [2022-11-21 16:08:14,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-21 16:08:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 737 transitions. [2022-11-21 16:08:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-21 16:08:14,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:14,870 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] [2022-11-21 16:08:14,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:08:14,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1318448056, now seen corresponding path program 1 times [2022-11-21 16:08:14,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504347547] [2022-11-21 16:08:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:15,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504347547] [2022-11-21 16:08:15,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504347547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:15,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:15,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45502912] [2022-11-21 16:08:15,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:15,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:15,011 INFO L87 Difference]: Start difference. First operand 451 states and 737 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-21 16:08:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:15,081 INFO L93 Difference]: Finished difference Result 1172 states and 1936 transitions. [2022-11-21 16:08:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-11-21 16:08:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:15,090 INFO L225 Difference]: With dead ends: 1172 [2022-11-21 16:08:15,090 INFO L226 Difference]: Without dead ends: 780 [2022-11-21 16:08:15,091 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 [2022-11-21 16:08:15,093 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 71 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:15,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 373 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-21 16:08:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 778. [2022-11-21 16:08:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 1.6319176319176318) internal successors, (1268), 777 states have internal predecessors, (1268), 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) [2022-11-21 16:08:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1268 transitions. [2022-11-21 16:08:15,147 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1268 transitions. Word has length 61 [2022-11-21 16:08:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:15,147 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 1268 transitions. [2022-11-21 16:08:15,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-21 16:08:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1268 transitions. [2022-11-21 16:08:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 16:08:15,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:15,150 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] [2022-11-21 16:08:15,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:08:15,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1490100131, now seen corresponding path program 1 times [2022-11-21 16:08:15,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:15,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146034823] [2022-11-21 16:08:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:15,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:15,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:15,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146034823] [2022-11-21 16:08:15,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146034823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:15,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:15,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067396526] [2022-11-21 16:08:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:15,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:15,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:15,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:15,251 INFO L87 Difference]: Start difference. First operand 778 states and 1268 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-21 16:08:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:15,325 INFO L93 Difference]: Finished difference Result 1469 states and 2413 transitions. [2022-11-21 16:08:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-11-21 16:08:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:15,331 INFO L225 Difference]: With dead ends: 1469 [2022-11-21 16:08:15,331 INFO L226 Difference]: Without dead ends: 1077 [2022-11-21 16:08:15,333 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 [2022-11-21 16:08:15,334 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 72 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 371 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 [2022-11-21 16:08:15,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 371 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2022-11-21 16:08:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2022-11-21 16:08:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.6238361266294228) internal successors, (1744), 1074 states have internal predecessors, (1744), 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) [2022-11-21 16:08:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1744 transitions. [2022-11-21 16:08:15,422 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1744 transitions. Word has length 63 [2022-11-21 16:08:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:15,424 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1744 transitions. [2022-11-21 16:08:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-21 16:08:15,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1744 transitions. [2022-11-21 16:08:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 16:08:15,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:15,427 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] [2022-11-21 16:08:15,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:08:15,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1505042206, now seen corresponding path program 1 times [2022-11-21 16:08:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:15,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068060147] [2022-11-21 16:08:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:15,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068060147] [2022-11-21 16:08:15,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068060147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:15,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:15,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426207527] [2022-11-21 16:08:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:15,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:15,602 INFO L87 Difference]: Start difference. First operand 1075 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2022-11-21 16:08:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:16,162 INFO L93 Difference]: Finished difference Result 5476 states and 9067 transitions. [2022-11-21 16:08:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:16,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2022-11-21 16:08:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:16,185 INFO L225 Difference]: With dead ends: 5476 [2022-11-21 16:08:16,186 INFO L226 Difference]: Without dead ends: 4466 [2022-11-21 16:08:16,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:08:16,192 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 703 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:16,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 832 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2022-11-21 16:08:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2018. [2022-11-21 16:08:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 1.6192364898363907) internal successors, (3266), 2017 states have internal predecessors, (3266), 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) [2022-11-21 16:08:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3266 transitions. [2022-11-21 16:08:16,411 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3266 transitions. Word has length 63 [2022-11-21 16:08:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:16,411 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3266 transitions. [2022-11-21 16:08:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2022-11-21 16:08:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3266 transitions. [2022-11-21 16:08:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 16:08:16,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:16,413 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] [2022-11-21 16:08:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:08:16,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1334500853, now seen corresponding path program 1 times [2022-11-21 16:08:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:16,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873847792] [2022-11-21 16:08:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:16,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873847792] [2022-11-21 16:08:16,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873847792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:16,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:16,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:08:16,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272391432] [2022-11-21 16:08:16,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:16,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:08:16,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:08:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:08:16,512 INFO L87 Difference]: Start difference. First operand 2018 states and 3266 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-21 16:08:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:16,980 INFO L93 Difference]: Finished difference Result 6601 states and 10825 transitions. [2022-11-21 16:08:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:08:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-11-21 16:08:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:17,001 INFO L225 Difference]: With dead ends: 6601 [2022-11-21 16:08:17,002 INFO L226 Difference]: Without dead ends: 4648 [2022-11-21 16:08:17,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:17,007 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 284 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:17,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 531 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2022-11-21 16:08:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 3314. [2022-11-21 16:08:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3313 states have (on average 1.620887413220646) internal successors, (5370), 3313 states have internal predecessors, (5370), 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) [2022-11-21 16:08:17,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5370 transitions. [2022-11-21 16:08:17,377 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5370 transitions. Word has length 64 [2022-11-21 16:08:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 3314 states and 5370 transitions. [2022-11-21 16:08:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-21 16:08:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5370 transitions. [2022-11-21 16:08:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 16:08:17,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:17,380 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] [2022-11-21 16:08:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:08:17,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash -173681863, now seen corresponding path program 1 times [2022-11-21 16:08:17,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:17,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348771841] [2022-11-21 16:08:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348771841] [2022-11-21 16:08:17,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348771841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:17,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:17,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:08:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343526505] [2022-11-21 16:08:17,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:17,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:08:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:08:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:08:17,520 INFO L87 Difference]: Start difference. First operand 3314 states and 5370 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-21 16:08:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:18,218 INFO L93 Difference]: Finished difference Result 10669 states and 17369 transitions. [2022-11-21 16:08:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:08:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2022-11-21 16:08:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:18,254 INFO L225 Difference]: With dead ends: 10669 [2022-11-21 16:08:18,254 INFO L226 Difference]: Without dead ends: 7420 [2022-11-21 16:08:18,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:18,261 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 282 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:18,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 533 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7420 states. [2022-11-21 16:08:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7420 to 5338. [2022-11-21 16:08:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 1.609893198426082) internal successors, (8592), 5337 states have internal predecessors, (8592), 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) [2022-11-21 16:08:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8592 transitions. [2022-11-21 16:08:18,890 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8592 transitions. Word has length 65 [2022-11-21 16:08:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:18,890 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8592 transitions. [2022-11-21 16:08:18,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-21 16:08:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8592 transitions. [2022-11-21 16:08:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 16:08:18,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:18,893 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] [2022-11-21 16:08:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:08:18,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1620972802, now seen corresponding path program 1 times [2022-11-21 16:08:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:18,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282514064] [2022-11-21 16:08:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:19,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282514064] [2022-11-21 16:08:19,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282514064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:19,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:19,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:08:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205130886] [2022-11-21 16:08:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:08:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:08:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:08:19,048 INFO L87 Difference]: Start difference. First operand 5338 states and 8592 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-21 16:08:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:19,978 INFO L93 Difference]: Finished difference Result 16865 states and 27249 transitions. [2022-11-21 16:08:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:08:19,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-11-21 16:08:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:20,026 INFO L225 Difference]: With dead ends: 16865 [2022-11-21 16:08:20,027 INFO L226 Difference]: Without dead ends: 11592 [2022-11-21 16:08:20,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:20,036 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 280 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:20,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 540 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11592 states. [2022-11-21 16:08:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11592 to 8422. [2022-11-21 16:08:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 1.598622491390571) internal successors, (13462), 8421 states have internal predecessors, (13462), 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) [2022-11-21 16:08:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 13462 transitions. [2022-11-21 16:08:21,027 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 13462 transitions. Word has length 66 [2022-11-21 16:08:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:21,028 INFO L495 AbstractCegarLoop]: Abstraction has 8422 states and 13462 transitions. [2022-11-21 16:08:21,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-11-21 16:08:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 13462 transitions. [2022-11-21 16:08:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:08:21,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:21,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:21,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:08:21,030 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:21,031 INFO L85 PathProgramCache]: Analyzing trace with hash 849177530, now seen corresponding path program 1 times [2022-11-21 16:08:21,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:21,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978013535] [2022-11-21 16:08:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:21,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978013535] [2022-11-21 16:08:21,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978013535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:21,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:21,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349150871] [2022-11-21 16:08:21,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:21,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:21,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:21,303 INFO L87 Difference]: Start difference. First operand 8422 states and 13462 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-11-21 16:08:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:22,134 INFO L93 Difference]: Finished difference Result 16781 states and 26838 transitions. [2022-11-21 16:08:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2022-11-21 16:08:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:22,166 INFO L225 Difference]: With dead ends: 16781 [2022-11-21 16:08:22,167 INFO L226 Difference]: Without dead ends: 8424 [2022-11-21 16:08:22,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:08:22,180 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 141 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:22,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 581 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2022-11-21 16:08:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 8422. [2022-11-21 16:08:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 1.583778648616554) internal successors, (13337), 8421 states have internal predecessors, (13337), 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) [2022-11-21 16:08:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 13337 transitions. [2022-11-21 16:08:23,026 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 13337 transitions. Word has length 68 [2022-11-21 16:08:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:23,027 INFO L495 AbstractCegarLoop]: Abstraction has 8422 states and 13337 transitions. [2022-11-21 16:08:23,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-11-21 16:08:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 13337 transitions. [2022-11-21 16:08:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 16:08:23,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:23,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:23,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:08:23,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2101680228, now seen corresponding path program 1 times [2022-11-21 16:08:23,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:23,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720617823] [2022-11-21 16:08:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720617823] [2022-11-21 16:08:23,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720617823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:23,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:23,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:23,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468225494] [2022-11-21 16:08:23,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:23,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:23,271 INFO L87 Difference]: Start difference. First operand 8422 states and 13337 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-11-21 16:08:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:25,105 INFO L93 Difference]: Finished difference Result 24139 states and 38372 transitions. [2022-11-21 16:08:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2022-11-21 16:08:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:25,158 INFO L225 Difference]: With dead ends: 24139 [2022-11-21 16:08:25,158 INFO L226 Difference]: Without dead ends: 15782 [2022-11-21 16:08:25,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:08:25,170 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 275 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:25,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 447 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:08:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15782 states. [2022-11-21 16:08:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15782 to 15780. [2022-11-21 16:08:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15780 states, 15779 states have (on average 1.5673997084732874) internal successors, (24732), 15779 states have internal predecessors, (24732), 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) [2022-11-21 16:08:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15780 states to 15780 states and 24732 transitions. [2022-11-21 16:08:26,333 INFO L78 Accepts]: Start accepts. Automaton has 15780 states and 24732 transitions. Word has length 71 [2022-11-21 16:08:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:26,333 INFO L495 AbstractCegarLoop]: Abstraction has 15780 states and 24732 transitions. [2022-11-21 16:08:26,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-11-21 16:08:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15780 states and 24732 transitions. [2022-11-21 16:08:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-21 16:08:26,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:26,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:26,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:08:26,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1156153373, now seen corresponding path program 1 times [2022-11-21 16:08:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:26,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324230806] [2022-11-21 16:08:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:26,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324230806] [2022-11-21 16:08:26,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324230806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:26,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:26,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628244235] [2022-11-21 16:08:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:26,601 INFO L87 Difference]: Start difference. First operand 15780 states and 24732 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2022-11-21 16:08:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:29,026 INFO L93 Difference]: Finished difference Result 31384 states and 48483 transitions. [2022-11-21 16:08:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:29,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2022-11-21 16:08:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:29,109 INFO L225 Difference]: With dead ends: 31384 [2022-11-21 16:08:29,109 INFO L226 Difference]: Without dead ends: 31382 [2022-11-21 16:08:29,116 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 [2022-11-21 16:08:29,117 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 242 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:29,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 713 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31382 states. [2022-11-21 16:08:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31382 to 16866. [2022-11-21 16:08:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16866 states, 16865 states have (on average 1.5303290839015713) internal successors, (25809), 16865 states have internal predecessors, (25809), 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) [2022-11-21 16:08:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16866 states to 16866 states and 25809 transitions. [2022-11-21 16:08:30,587 INFO L78 Accepts]: Start accepts. Automaton has 16866 states and 25809 transitions. Word has length 72 [2022-11-21 16:08:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:30,587 INFO L495 AbstractCegarLoop]: Abstraction has 16866 states and 25809 transitions. [2022-11-21 16:08:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2022-11-21 16:08:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 16866 states and 25809 transitions. [2022-11-21 16:08:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 16:08:30,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:30,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:08:30,592 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1615200262, now seen corresponding path program 1 times [2022-11-21 16:08:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:30,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452904739] [2022-11-21 16:08:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:30,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:30,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452904739] [2022-11-21 16:08:30,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452904739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:30,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:30,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:30,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585872680] [2022-11-21 16:08:30,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:30,685 INFO L87 Difference]: Start difference. First operand 16866 states and 25809 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-11-21 16:08:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:33,355 INFO L93 Difference]: Finished difference Result 50355 states and 76986 transitions. [2022-11-21 16:08:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2022-11-21 16:08:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:33,445 INFO L225 Difference]: With dead ends: 50355 [2022-11-21 16:08:33,446 INFO L226 Difference]: Without dead ends: 33554 [2022-11-21 16:08:33,472 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 [2022-11-21 16:08:33,473 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 133 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:33,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 417 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33554 states. [2022-11-21 16:08:36,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33554 to 33552. [2022-11-21 16:08:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33552 states, 33551 states have (on average 1.5154242794551578) internal successors, (50844), 33551 states have internal predecessors, (50844), 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) [2022-11-21 16:08:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33552 states to 33552 states and 50844 transitions. [2022-11-21 16:08:36,578 INFO L78 Accepts]: Start accepts. Automaton has 33552 states and 50844 transitions. Word has length 97 [2022-11-21 16:08:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:36,578 INFO L495 AbstractCegarLoop]: Abstraction has 33552 states and 50844 transitions. [2022-11-21 16:08:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-11-21 16:08:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 33552 states and 50844 transitions. [2022-11-21 16:08:36,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 16:08:36,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:36,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:36,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:08:36,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1592111147, now seen corresponding path program 1 times [2022-11-21 16:08:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:36,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718802409] [2022-11-21 16:08:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:36,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:08:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:36,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718802409] [2022-11-21 16:08:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718802409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:36,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:36,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413373495] [2022-11-21 16:08:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:08:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:08:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:08:36,901 INFO L87 Difference]: Start difference. First operand 33552 states and 50844 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-21 16:08:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:08:42,280 INFO L93 Difference]: Finished difference Result 100174 states and 151646 transitions. [2022-11-21 16:08:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:08:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 97 [2022-11-21 16:08:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:08:42,425 INFO L225 Difference]: With dead ends: 100174 [2022-11-21 16:08:42,425 INFO L226 Difference]: Without dead ends: 66729 [2022-11-21 16:08:42,469 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 [2022-11-21 16:08:42,470 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 102 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:08:42,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 383 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:08:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66729 states. [2022-11-21 16:08:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66729 to 66727. [2022-11-21 16:08:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66727 states, 66726 states have (on average 1.500239786589935) internal successors, (100105), 66726 states have internal predecessors, (100105), 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) [2022-11-21 16:08:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66727 states to 66727 states and 100105 transitions. [2022-11-21 16:08:48,734 INFO L78 Accepts]: Start accepts. Automaton has 66727 states and 100105 transitions. Word has length 97 [2022-11-21 16:08:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:08:48,735 INFO L495 AbstractCegarLoop]: Abstraction has 66727 states and 100105 transitions. [2022-11-21 16:08:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-21 16:08:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 66727 states and 100105 transitions. [2022-11-21 16:08:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 16:08:48,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:08:48,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:08:48,745 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:08:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1781894600, now seen corresponding path program 1 times [2022-11-21 16:08:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:48,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014348365] [2022-11-21 16:08:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:08:48,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:48,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014348365] [2022-11-21 16:08:48,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014348365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:48,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:48,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:48,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200913435] [2022-11-21 16:08:48,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:48,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:48,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:48,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:48,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:48,920 INFO L87 Difference]: Start difference. First operand 66727 states and 100105 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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)