./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro --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 92cde93213bbdc81547d3bc892d5e318fc734fba39005e38f7e15156190bb05f --- 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-8393723 [2022-11-18 19:50:59,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:51:00,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:51:00,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:51:00,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:51:00,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:51:00,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:51:00,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:51:00,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:51:00,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:51:00,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:51:00,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:51:00,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:51:00,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:51:00,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:51:00,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:51:00,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:51:00,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:51:00,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:51:00,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:51:00,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:51:00,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:51:00,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:51:00,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:51:00,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:51:00,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:51:00,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:51:00,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:51:00,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:51:00,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:51:00,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:51:00,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:51:00,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:51:00,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:51:00,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:51:00,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:51:00,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:51:00,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:51:00,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:51:00,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:51:00,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:51:00,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:51:00,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:51:00,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:51:00,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:51:00,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:51:00,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:51:00,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:51:00,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:51:00,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:51:00,128 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:51:00,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:51:00,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:51:00,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:51:00,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:51:00,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:51:00,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:51:00,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:51:00,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:51:00,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:51:00,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:51:00,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:51:00,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:51:00,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:51:00,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:51:00,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:51:00,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:00,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:51:00,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:51:00,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:51:00,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:51:00,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:51:00,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:51:00,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:51:00,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:51:00,136 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_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92cde93213bbdc81547d3bc892d5e318fc734fba39005e38f7e15156190bb05f [2022-11-18 19:51:00,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:51:00,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:51:00,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:51:00,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:51:00,519 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:51:00,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c [2022-11-18 19:51:00,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/data/e45c9f536/e8e7fb75bb234bc8a3cb97675261c805/FLAG1ecaef4a1 [2022-11-18 19:51:01,153 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:51:01,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c [2022-11-18 19:51:01,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/data/e45c9f536/e8e7fb75bb234bc8a3cb97675261c805/FLAG1ecaef4a1 [2022-11-18 19:51:01,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/data/e45c9f536/e8e7fb75bb234bc8a3cb97675261c805 [2022-11-18 19:51:01,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:51:01,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:51:01,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:01,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:51:01,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:51:01,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:01" (1/1) ... [2022-11-18 19:51:01,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43249ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:01, skipping insertion in model container [2022-11-18 19:51:01,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:51:01" (1/1) ... [2022-11-18 19:51:01,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:51:01,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:51:01,985 WARN L234 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_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c[28194,28207] [2022-11-18 19:51:01,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:01,999 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:51:02,076 WARN L234 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_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c[28194,28207] [2022-11-18 19:51:02,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:51:02,093 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:51:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02 WrapperNode [2022-11-18 19:51:02,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:51:02,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:02,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:51:02,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:51:02,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,201 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 903 [2022-11-18 19:51:02,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:51:02,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:51:02,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:51:02,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:51:02,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:51:02,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:51:02,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:51:02,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:51:02,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (1/1) ... [2022-11-18 19:51:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:51:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:51:02,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:51:02,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd69d3f9-f51a-4803-9ce4-dc7c783dfb67/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:51:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:51:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:51:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:51:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:51:02,504 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:51:02,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:51:03,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:51:03,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:51:03,660 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:51:03,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:03 BoogieIcfgContainer [2022-11-18 19:51:03,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:51:03,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:51:03,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:51:03,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:51:03,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:51:01" (1/3) ... [2022-11-18 19:51:03,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf63cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:03, skipping insertion in model container [2022-11-18 19:51:03,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:51:02" (2/3) ... [2022-11-18 19:51:03,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf63cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:51:03, skipping insertion in model container [2022-11-18 19:51:03,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:51:03" (3/3) ... [2022-11-18 19:51:03,673 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c [2022-11-18 19:51:03,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:51:03,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:51:03,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:51:03,761 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;@4ab5ba70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:51:03,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:51:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 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) [2022-11-18 19:51:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:51:03,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:03,781 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, 1, 1, 1, 1, 1] [2022-11-18 19:51:03,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash -875885192, now seen corresponding path program 1 times [2022-11-18 19:51:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:03,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777440441] [2022-11-18 19:51:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:03,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:04,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:04,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777440441] [2022-11-18 19:51:04,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777440441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:04,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:04,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:51:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738440151] [2022-11-18 19:51:04,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:04,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:51:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:51:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:51:04,245 INFO L87 Difference]: Start difference. First operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 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 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:04,286 INFO L93 Difference]: Finished difference Result 369 states and 666 transitions. [2022-11-18 19:51:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:51:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:51:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:04,300 INFO L225 Difference]: With dead ends: 369 [2022-11-18 19:51:04,300 INFO L226 Difference]: Without dead ends: 276 [2022-11-18 19:51:04,304 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 [2022-11-18 19:51:04,307 INFO L413 NwaCegarLoop]: 507 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, 507 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 [2022-11-18 19:51:04,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:04,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-18 19:51:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-18 19:51:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.829090909090909) internal successors, (503), 275 states have internal predecessors, (503), 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) [2022-11-18 19:51:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 503 transitions. [2022-11-18 19:51:04,359 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 503 transitions. Word has length 77 [2022-11-18 19:51:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:04,359 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 503 transitions. [2022-11-18 19:51:04,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 503 transitions. [2022-11-18 19:51:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 19:51:04,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:04,363 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, 1, 1, 1, 1, 1] [2022-11-18 19:51:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:51:04,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1009898698, now seen corresponding path program 1 times [2022-11-18 19:51:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334781009] [2022-11-18 19:51:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:04,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:04,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334781009] [2022-11-18 19:51:04,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334781009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:04,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:04,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:51:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721992327] [2022-11-18 19:51:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:04,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:51:04,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:51:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:51:04,782 INFO L87 Difference]: Start difference. First operand 276 states and 503 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:04,943 INFO L93 Difference]: Finished difference Result 364 states and 656 transitions. [2022-11-18 19:51:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:51:04,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 19:51:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:04,946 INFO L225 Difference]: With dead ends: 364 [2022-11-18 19:51:04,946 INFO L226 Difference]: Without dead ends: 276 [2022-11-18 19:51:04,947 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 [2022-11-18 19:51:04,948 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 3 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:04,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1959 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-18 19:51:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-11-18 19:51:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6763636363636363) internal successors, (461), 275 states have internal predecessors, (461), 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) [2022-11-18 19:51:04,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 461 transitions. [2022-11-18 19:51:04,963 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 461 transitions. Word has length 77 [2022-11-18 19:51:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:04,964 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 461 transitions. [2022-11-18 19:51:04,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 461 transitions. [2022-11-18 19:51:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:51:04,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:04,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:04,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:51:04,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1489902654, now seen corresponding path program 1 times [2022-11-18 19:51:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:04,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063402836] [2022-11-18 19:51:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:05,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063402836] [2022-11-18 19:51:05,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063402836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:05,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:05,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892675495] [2022-11-18 19:51:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:05,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,264 INFO L87 Difference]: Start difference. First operand 276 states and 461 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-11-18 19:51:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:05,309 INFO L93 Difference]: Finished difference Result 433 states and 738 transitions. [2022-11-18 19:51:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2022-11-18 19:51:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:05,312 INFO L225 Difference]: With dead ends: 433 [2022-11-18 19:51:05,312 INFO L226 Difference]: Without dead ends: 349 [2022-11-18 19:51:05,313 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 [2022-11-18 19:51:05,314 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 120 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 977 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 [2022-11-18 19:51:05,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 977 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-18 19:51:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2022-11-18 19:51:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.6849710982658959) internal successors, (583), 346 states have internal predecessors, (583), 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) [2022-11-18 19:51:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 583 transitions. [2022-11-18 19:51:05,331 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 583 transitions. Word has length 118 [2022-11-18 19:51:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:05,331 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 583 transitions. [2022-11-18 19:51:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2022-11-18 19:51:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 583 transitions. [2022-11-18 19:51:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:51:05,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:05,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:51:05,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623676, now seen corresponding path program 1 times [2022-11-18 19:51:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500455050] [2022-11-18 19:51:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500455050] [2022-11-18 19:51:05,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500455050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:05,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:05,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:05,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498938333] [2022-11-18 19:51:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:05,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,485 INFO L87 Difference]: Start difference. First operand 347 states and 583 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-18 19:51:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:05,520 INFO L93 Difference]: Finished difference Result 503 states and 858 transitions. [2022-11-18 19:51:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:05,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-11-18 19:51:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:05,526 INFO L225 Difference]: With dead ends: 503 [2022-11-18 19:51:05,526 INFO L226 Difference]: Without dead ends: 419 [2022-11-18 19:51:05,527 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 [2022-11-18 19:51:05,528 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 129 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1011 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 [2022-11-18 19:51:05,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1011 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-18 19:51:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2022-11-18 19:51:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.6971153846153846) internal successors, (706), 416 states have internal predecessors, (706), 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) [2022-11-18 19:51:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 706 transitions. [2022-11-18 19:51:05,544 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 706 transitions. Word has length 121 [2022-11-18 19:51:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:05,545 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 706 transitions. [2022-11-18 19:51:05,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-18 19:51:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 706 transitions. [2022-11-18 19:51:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:51:05,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:05,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:51:05,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 942583131, now seen corresponding path program 1 times [2022-11-18 19:51:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:05,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847741951] [2022-11-18 19:51:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:05,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847741951] [2022-11-18 19:51:05,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847741951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:05,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:05,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:05,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129847860] [2022-11-18 19:51:05,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,687 INFO L87 Difference]: Start difference. First operand 417 states and 706 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-18 19:51:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:05,737 INFO L93 Difference]: Finished difference Result 836 states and 1439 transitions. [2022-11-18 19:51:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-11-18 19:51:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:05,741 INFO L225 Difference]: With dead ends: 836 [2022-11-18 19:51:05,742 INFO L226 Difference]: Without dead ends: 613 [2022-11-18 19:51:05,745 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 [2022-11-18 19:51:05,749 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 121 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 988 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 [2022-11-18 19:51:05,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-18 19:51:05,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 611. [2022-11-18 19:51:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.7098360655737705) internal successors, (1043), 610 states have internal predecessors, (1043), 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) [2022-11-18 19:51:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1043 transitions. [2022-11-18 19:51:05,788 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1043 transitions. Word has length 121 [2022-11-18 19:51:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:05,789 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1043 transitions. [2022-11-18 19:51:05,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2022-11-18 19:51:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1043 transitions. [2022-11-18 19:51:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:51:05,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:05,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:05,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:51:05,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2091470231, now seen corresponding path program 1 times [2022-11-18 19:51:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467569253] [2022-11-18 19:51:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:05,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467569253] [2022-11-18 19:51:05,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467569253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:05,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:05,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814092209] [2022-11-18 19:51:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:05,970 INFO L87 Difference]: Start difference. First operand 611 states and 1043 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-18 19:51:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:06,016 INFO L93 Difference]: Finished difference Result 1022 states and 1760 transitions. [2022-11-18 19:51:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-11-18 19:51:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:06,020 INFO L225 Difference]: With dead ends: 1022 [2022-11-18 19:51:06,020 INFO L226 Difference]: Without dead ends: 799 [2022-11-18 19:51:06,021 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 [2022-11-18 19:51:06,022 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 122 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1001 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 [2022-11-18 19:51:06,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1001 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-18 19:51:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-11-18 19:51:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.7123115577889447) internal successors, (1363), 796 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:51:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1363 transitions. [2022-11-18 19:51:06,052 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1363 transitions. Word has length 124 [2022-11-18 19:51:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:06,052 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1363 transitions. [2022-11-18 19:51:06,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-18 19:51:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1363 transitions. [2022-11-18 19:51:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:51:06,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:06,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:51:06,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2013778626, now seen corresponding path program 1 times [2022-11-18 19:51:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:06,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440029585] [2022-11-18 19:51:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:06,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440029585] [2022-11-18 19:51:06,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440029585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:06,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:06,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:06,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868022355] [2022-11-18 19:51:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:06,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:06,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:06,188 INFO L87 Difference]: Start difference. First operand 797 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-18 19:51:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:06,241 INFO L93 Difference]: Finished difference Result 1908 states and 3288 transitions. [2022-11-18 19:51:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:06,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-11-18 19:51:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:06,246 INFO L225 Difference]: With dead ends: 1908 [2022-11-18 19:51:06,246 INFO L226 Difference]: Without dead ends: 1312 [2022-11-18 19:51:06,248 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 [2022-11-18 19:51:06,248 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 979 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 [2022-11-18 19:51:06,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 979 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-11-18 19:51:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2022-11-18 19:51:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.7104660045836517) internal successors, (2239), 1309 states have internal predecessors, (2239), 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) [2022-11-18 19:51:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2239 transitions. [2022-11-18 19:51:06,331 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2239 transitions. Word has length 124 [2022-11-18 19:51:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:06,332 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2239 transitions. [2022-11-18 19:51:06,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-11-18 19:51:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2239 transitions. [2022-11-18 19:51:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 19:51:06,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:06,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:51:06,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1950081272, now seen corresponding path program 1 times [2022-11-18 19:51:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193141011] [2022-11-18 19:51:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:06,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193141011] [2022-11-18 19:51:06,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193141011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:06,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:06,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140165287] [2022-11-18 19:51:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:06,496 INFO L87 Difference]: Start difference. First operand 1310 states and 2239 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-18 19:51:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:06,593 INFO L93 Difference]: Finished difference Result 2383 states and 4094 transitions. [2022-11-18 19:51:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-11-18 19:51:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:06,600 INFO L225 Difference]: With dead ends: 2383 [2022-11-18 19:51:06,601 INFO L226 Difference]: Without dead ends: 1787 [2022-11-18 19:51:06,602 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 [2022-11-18 19:51:06,603 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 115 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 991 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 [2022-11-18 19:51:06,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 991 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2022-11-18 19:51:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1785. [2022-11-18 19:51:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 1.7062780269058295) internal successors, (3044), 1784 states have internal predecessors, (3044), 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) [2022-11-18 19:51:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3044 transitions. [2022-11-18 19:51:06,689 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3044 transitions. Word has length 127 [2022-11-18 19:51:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:06,689 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3044 transitions. [2022-11-18 19:51:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-18 19:51:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3044 transitions. [2022-11-18 19:51:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 19:51:06,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:06,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:51:06,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash 114997535, now seen corresponding path program 1 times [2022-11-18 19:51:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:06,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586587229] [2022-11-18 19:51:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:06,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:06,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586587229] [2022-11-18 19:51:06,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586587229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:06,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:06,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456716532] [2022-11-18 19:51:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:06,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:06,862 INFO L87 Difference]: Start difference. First operand 1785 states and 3044 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-18 19:51:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:07,002 INFO L93 Difference]: Finished difference Result 4696 states and 8005 transitions. [2022-11-18 19:51:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:07,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-11-18 19:51:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:07,015 INFO L225 Difference]: With dead ends: 4696 [2022-11-18 19:51:07,015 INFO L226 Difference]: Without dead ends: 3119 [2022-11-18 19:51:07,018 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 [2022-11-18 19:51:07,021 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 107 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 970 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 [2022-11-18 19:51:07,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 970 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2022-11-18 19:51:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2022-11-18 19:51:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3116 states have (on average 1.6903080872913991) internal successors, (5267), 3116 states have internal predecessors, (5267), 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) [2022-11-18 19:51:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 5267 transitions. [2022-11-18 19:51:07,200 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 5267 transitions. Word has length 127 [2022-11-18 19:51:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:07,201 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 5267 transitions. [2022-11-18 19:51:07,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-11-18 19:51:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 5267 transitions. [2022-11-18 19:51:07,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:51:07,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:07,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:07,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:51:07,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:07,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1099622423, now seen corresponding path program 1 times [2022-11-18 19:51:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:07,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732876977] [2022-11-18 19:51:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:07,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732876977] [2022-11-18 19:51:07,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732876977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:07,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:07,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:51:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747350821] [2022-11-18 19:51:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:51:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:51:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:51:07,350 INFO L87 Difference]: Start difference. First operand 3117 states and 5267 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2022-11-18 19:51:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:07,530 INFO L93 Difference]: Finished difference Result 5900 states and 9996 transitions. [2022-11-18 19:51:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:51:07,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2022-11-18 19:51:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:07,546 INFO L225 Difference]: With dead ends: 5900 [2022-11-18 19:51:07,546 INFO L226 Difference]: Without dead ends: 4323 [2022-11-18 19:51:07,550 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 [2022-11-18 19:51:07,551 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 108 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 981 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 [2022-11-18 19:51:07,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 981 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:51:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2022-11-18 19:51:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4321. [2022-11-18 19:51:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.679861111111111) internal successors, (7257), 4320 states have internal predecessors, (7257), 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) [2022-11-18 19:51:07,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 7257 transitions. [2022-11-18 19:51:07,842 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 7257 transitions. Word has length 130 [2022-11-18 19:51:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:07,842 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 7257 transitions. [2022-11-18 19:51:07,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2022-11-18 19:51:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 7257 transitions. [2022-11-18 19:51:07,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 19:51:07,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:07,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:07,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:51:07,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:07,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1139060542, now seen corresponding path program 1 times [2022-11-18 19:51:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:07,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248965442] [2022-11-18 19:51:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:08,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248965442] [2022-11-18 19:51:08,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248965442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:08,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:08,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:51:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454502456] [2022-11-18 19:51:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:08,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:08,125 INFO L87 Difference]: Start difference. First operand 4321 states and 7257 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2022-11-18 19:51:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:09,703 INFO L93 Difference]: Finished difference Result 27701 states and 47018 transitions. [2022-11-18 19:51:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:51:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 130 [2022-11-18 19:51:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:09,798 INFO L225 Difference]: With dead ends: 27701 [2022-11-18 19:51:09,798 INFO L226 Difference]: Without dead ends: 23595 [2022-11-18 19:51:09,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:51:09,809 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1656 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:09,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2764 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:51:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23595 states. [2022-11-18 19:51:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23595 to 8277. [2022-11-18 19:51:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 1.6718221362977284) internal successors, (13836), 8276 states have internal predecessors, (13836), 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) [2022-11-18 19:51:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 13836 transitions. [2022-11-18 19:51:10,749 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 13836 transitions. Word has length 130 [2022-11-18 19:51:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:10,750 INFO L495 AbstractCegarLoop]: Abstraction has 8277 states and 13836 transitions. [2022-11-18 19:51:10,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2022-11-18 19:51:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 13836 transitions. [2022-11-18 19:51:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 19:51:10,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:10,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:10,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:51:10,754 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1143468315, now seen corresponding path program 1 times [2022-11-18 19:51:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:10,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570233711] [2022-11-18 19:51:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:10,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:10,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570233711] [2022-11-18 19:51:10,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570233711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:10,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:10,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243231023] [2022-11-18 19:51:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:10,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:10,955 INFO L87 Difference]: Start difference. First operand 8277 states and 13836 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2022-11-18 19:51:12,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:12,334 INFO L93 Difference]: Finished difference Result 27383 states and 46124 transitions. [2022-11-18 19:51:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:12,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2022-11-18 19:51:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:12,383 INFO L225 Difference]: With dead ends: 27383 [2022-11-18 19:51:12,384 INFO L226 Difference]: Without dead ends: 19321 [2022-11-18 19:51:12,394 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 [2022-11-18 19:51:12,395 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 423 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1451 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 [2022-11-18 19:51:12,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1451 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2022-11-18 19:51:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 13744. [2022-11-18 19:51:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 13743 states have (on average 1.6712508185985593) internal successors, (22968), 13743 states have internal predecessors, (22968), 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) [2022-11-18 19:51:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 22968 transitions. [2022-11-18 19:51:13,398 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 22968 transitions. Word has length 131 [2022-11-18 19:51:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:13,398 INFO L495 AbstractCegarLoop]: Abstraction has 13744 states and 22968 transitions. [2022-11-18 19:51:13,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2022-11-18 19:51:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 22968 transitions. [2022-11-18 19:51:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 19:51:13,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:13,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:51:13,401 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1281585493, now seen corresponding path program 1 times [2022-11-18 19:51:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:13,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430614085] [2022-11-18 19:51:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:13,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:13,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430614085] [2022-11-18 19:51:13,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430614085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:13,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:13,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130748060] [2022-11-18 19:51:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:13,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:13,557 INFO L87 Difference]: Start difference. First operand 13744 states and 22968 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2022-11-18 19:51:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:15,755 INFO L93 Difference]: Finished difference Result 45169 states and 75660 transitions. [2022-11-18 19:51:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:15,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2022-11-18 19:51:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:15,844 INFO L225 Difference]: With dead ends: 45169 [2022-11-18 19:51:15,845 INFO L226 Difference]: Without dead ends: 31640 [2022-11-18 19:51:15,865 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 [2022-11-18 19:51:15,866 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 421 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1453 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 [2022-11-18 19:51:15,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1453 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2022-11-18 19:51:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 22603. [2022-11-18 19:51:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.662065303955402) internal successors, (37566), 22602 states have internal predecessors, (37566), 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) [2022-11-18 19:51:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 37566 transitions. [2022-11-18 19:51:17,472 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 37566 transitions. Word has length 132 [2022-11-18 19:51:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:17,472 INFO L495 AbstractCegarLoop]: Abstraction has 22603 states and 37566 transitions. [2022-11-18 19:51:17,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2022-11-18 19:51:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 37566 transitions. [2022-11-18 19:51:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 19:51:17,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:17,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:17,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:51:17,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:17,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash -682153444, now seen corresponding path program 1 times [2022-11-18 19:51:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:17,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264962935] [2022-11-18 19:51:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264962935] [2022-11-18 19:51:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264962935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:17,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:17,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091273189] [2022-11-18 19:51:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:17,645 INFO L87 Difference]: Start difference. First operand 22603 states and 37566 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-11-18 19:51:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:20,480 INFO L93 Difference]: Finished difference Result 74067 states and 123372 transitions. [2022-11-18 19:51:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 133 [2022-11-18 19:51:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:20,714 INFO L225 Difference]: With dead ends: 74067 [2022-11-18 19:51:20,715 INFO L226 Difference]: Without dead ends: 51679 [2022-11-18 19:51:20,754 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 [2022-11-18 19:51:20,755 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 419 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1455 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 [2022-11-18 19:51:20,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1455 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51679 states. [2022-11-18 19:51:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51679 to 36998. [2022-11-18 19:51:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36998 states, 36997 states have (on average 1.6528907749276969) internal successors, (61152), 36997 states have internal predecessors, (61152), 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) [2022-11-18 19:51:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36998 states to 36998 states and 61152 transitions. [2022-11-18 19:51:23,645 INFO L78 Accepts]: Start accepts. Automaton has 36998 states and 61152 transitions. Word has length 133 [2022-11-18 19:51:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:23,645 INFO L495 AbstractCegarLoop]: Abstraction has 36998 states and 61152 transitions. [2022-11-18 19:51:23,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2022-11-18 19:51:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 36998 states and 61152 transitions. [2022-11-18 19:51:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 19:51:23,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:23,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:51:23,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1259514004, now seen corresponding path program 1 times [2022-11-18 19:51:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:23,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169897066] [2022-11-18 19:51:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:23,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169897066] [2022-11-18 19:51:23,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169897066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:23,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:23,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:51:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908854631] [2022-11-18 19:51:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:51:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:51:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:51:23,789 INFO L87 Difference]: Start difference. First operand 36998 states and 61152 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-11-18 19:51:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:28,140 INFO L93 Difference]: Finished difference Result 119893 states and 198604 transitions. [2022-11-18 19:51:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:51:28,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 134 [2022-11-18 19:51:28,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:28,293 INFO L225 Difference]: With dead ends: 119893 [2022-11-18 19:51:28,293 INFO L226 Difference]: Without dead ends: 83110 [2022-11-18 19:51:28,327 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 [2022-11-18 19:51:28,328 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 417 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1463 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 [2022-11-18 19:51:28,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1463 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83110 states. [2022-11-18 19:51:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83110 to 59829. [2022-11-18 19:51:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6440128367988234) internal successors, (98358), 59828 states have internal predecessors, (98358), 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) [2022-11-18 19:51:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 98358 transitions. [2022-11-18 19:51:32,550 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 98358 transitions. Word has length 134 [2022-11-18 19:51:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:32,550 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 98358 transitions. [2022-11-18 19:51:32,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2022-11-18 19:51:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 98358 transitions. [2022-11-18 19:51:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 19:51:32,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:32,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:32,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:51:32,558 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1428334268, now seen corresponding path program 1 times [2022-11-18 19:51:32,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:32,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453072194] [2022-11-18 19:51:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:33,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453072194] [2022-11-18 19:51:33,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453072194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:33,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:33,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:51:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440935136] [2022-11-18 19:51:33,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:33,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:33,041 INFO L87 Difference]: Start difference. First operand 59829 states and 98358 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2022-11-18 19:51:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:36,900 INFO L93 Difference]: Finished difference Result 119445 states and 196373 transitions. [2022-11-18 19:51:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:51:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 136 [2022-11-18 19:51:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:37,018 INFO L225 Difference]: With dead ends: 119445 [2022-11-18 19:51:37,019 INFO L226 Difference]: Without dead ends: 59831 [2022-11-18 19:51:37,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:51:37,059 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 254 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:37,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 2155 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:51:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59831 states. [2022-11-18 19:51:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59831 to 59829. [2022-11-18 19:51:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6335662231730963) internal successors, (97733), 59828 states have internal predecessors, (97733), 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) [2022-11-18 19:51:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 97733 transitions. [2022-11-18 19:51:41,145 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 97733 transitions. Word has length 136 [2022-11-18 19:51:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:41,146 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 97733 transitions. [2022-11-18 19:51:41,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2022-11-18 19:51:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 97733 transitions. [2022-11-18 19:51:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 19:51:41,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:41,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:51:41,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:51:41,149 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:51:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1982359839, now seen corresponding path program 1 times [2022-11-18 19:51:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:51:41,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759109752] [2022-11-18 19:51:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:51:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:51:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:51:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:51:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:51:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759109752] [2022-11-18 19:51:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759109752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:51:41,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:51:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:51:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247807152] [2022-11-18 19:51:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:51:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:51:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:51:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:51:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:51:41,576 INFO L87 Difference]: Start difference. First operand 59829 states and 97733 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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)